AP Physics C: Mechanics FRQ Room

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AP Physics C: Mechanics Free Response Questions

The best way to get better at FRQs is practice. Browse through dozens of practice AP Physics C: Mechanics FRQs to get ready for the big day.

  • View all (250)
  • Unit 1: Kinematics (44)
  • Unit 3: Work, Energy, and Power (36)
  • Unit 4: Systems of Particles and Linear Momentum (42)
  • Unit 5: Rotation (32)
  • Unit 6: Oscillations (53)
  • Unit 7: Gravitation (43)
Unit 1: Kinematics

Analysis of a Velocity-Vs-Time Graph

An object’s velocity is recorded along a straight path. The velocity-time graph indicates that the o

Medium

Analysis of Experimental Data Table

An experiment on an air track records the displacement of a cart at various times. The data is shown

Medium

Analyzing a Parabolic Trajectory

A projectile is launched with an initial speed of 50 m/s at an angle of 45°. Analyze its trajectory

Medium

Analyzing a Two-Dimensional Collision

Two objects undergo a collision in a plane. Object A (mass m_A) experiences a force during the colli

Hard

Conservation of Energy in Projectile Motion

A projectile is launched from the ground with an initial speed $$v_0 = 50$$ m/s at an angle of $$45°

Easy

Designing an Experiment: Motion on an Inclined Air Track

You are asked to design an experiment to determine the coefficient of kinetic friction on an incline

Extreme

Determination of Acceleration Due to Gravity

A student drops a small metal ball from a 45 m high platform and records its height over time using

Easy

Determining Acceleration Due to Gravity from Free Fall

A student conducted an experiment by dropping a metal ball from a height of 45 m. A digital timer co

Medium

Determining Instantaneous Acceleration from a Displacement Graph

An experiment recorded the displacement of an object as a function of time using a high-precision se

Hard

Determining Velocity from a Position Function with Differentiation Error

An experiment recorded the position of a particle moving along a straight line, modeled by the funct

Hard

Distance vs. Displacement Analysis in One-Dimensional Motion

An experiment recorded the motion of a car along a straight road where its distance traveled and dis

Medium

Distance vs. Displacement Analysis in One-Dimensional Motion

An object moves along a straight path and its motion is described by the velocity function $$v(t) =

Easy

Dynamic Cart on Air Track: Misinterpretation of Frictionless Environment

In an experiment, a dynamic cart was set in motion on an air track to study uniformly accelerated mo

Easy

Evaluating an Experimental Claim on Presumed Uniform Acceleration

A media report claims that a series of experiments have shown that objects in free fall experience a

Extreme

Free Fall Analysis with Terminal Velocity Consideration

A rock is dropped from a cliff 80 meters high. A researcher claims that the measured fall time of th

Easy

FRQ 1: Constant Acceleration Experiment

A researcher is investigating the motion of a cart along a frictionless track. The cart, starting fr

Easy

FRQ 2: Projectile Motion – Launch Experiment

A researcher uses a projectile launcher to study the flight of a ball launched at an angle. The ball

Medium

FRQ 4: Velocity-Time Graph Analysis (EASY)

A velocity versus time graph for an object shows the following behavior: • From $$t=0$$ to $$t=2\,s$

Easy

FRQ 6: Motion with Non-Uniform Acceleration

An object experiences a time-dependent acceleration given by $$a(t) = 4*t - 2$$ (in m/s²) and an ini

Hard

FRQ 7: Projectile Trajectory Analysis

A projectile is fired from ground level with an initial speed of 50 m/s at an angle of 40° above the

Easy

FRQ 15: Circular Motion with Varying Speed

A particle moves along a circular track of radius 5 m with its speed given by $$v(t)= 2 + t$$ (in m/

Medium

FRQ 15: Differentiation of a Cubic Displacement Function (EASY)

An object's displacement is given by $$s(t)=3*t^3-5*t^2+2*t$$ (in m). (a) Find the velocity function

Easy

FRQ 15: Investigating Uniformly Accelerated Motion Using Integrals

A researcher records the acceleration of an object with a sensor, finding that the acceleration vari

Medium

FRQ 19: Analysis of Motion on an Inclined Plane (MEDIUM)

An object slides down a frictionless inclined plane that makes an angle $$\theta$$ with the horizont

Medium

Impulse and Momentum with a Variable Force

A cart of mass $$m = 5.0\,kg$$ is subjected to a time-dependent force described by $$F(t)=5*t²$$ (in

Hard

Inferring Acceleration from Velocity Data Using Calculus

The following table shows the time and corresponding velocity for an object moving in one dimension,

Easy

Integrating an Acceleration Function to Determine Motion

An object's acceleration is described by $$a(t)=6*t-5$$, with initial velocity $$v(0)=2$$ m/s and in

Hard

Investigating Motion on an Inclined Plane

A lab experiment was set up to study the motion of a cart on an inclined air track. The cart’s displ

Medium

Kinematics with Calculus: Non-Uniform Acceleration

An object moves along the x-axis under a non-uniform acceleration given by $$a(t) = 4*t - 2$$ m/s²,

Hard

Lab Investigation: Effects of Launch Angle on Projectile Range

In a controlled laboratory experiment, a student launches a projectile with a fixed initial speed of

Medium

Non-linear Position Function Analysis

A particle moves along the x-axis with a non-linear, decaying oscillatory position given by $$x(t)=e

Extreme

One-Dimensional Uniform Acceleration Analysis

An object moves along a straight line with its position given by $$x(t) = -2*t^3 + 5*t^2 - 3*t + 1$$

Medium

Predicting Motion in a Resistive Medium

An object in free fall experiences a time-dependent acceleration given by $$a(t)=g\left(1-\frac{t}{T

Hard

Projectile Launch from an Elevated Platform

A ball is launched from a platform 10 meters above the ground with an initial speed of 30 m/s at an

Medium

Projectile Motion Experimental Investigation

A student investigates projectile motion using a spring-loaded launcher on an elevated platform. The

Medium

Projectile Motion with Drag

Design an experiment to analyze the trajectory of a projectile when including the effects of drag fo

Hard

Projectile Motion with Timing Error

In an outdoor lab experiment, a projectile launcher was used to fire a ball at a 45° angle relative

Hard

Sinusoidal Position and Velocity Analysis

Consider an object moving in one dimension whose position function is given by $$x(t)=\sin(t)$$, ove

Easy

Trajectory Optimization of an Accelerating Car

A car accelerates according to $$a(t)= 6 - 0.5*t$$ (m/s²) with an initial velocity of 10 m/s at $$t=

Hard

Variable Acceleration and Integration

An object moves along a line with a time-dependent acceleration given by $$a(t)=6*t - 2$$ (in m/s²).

Medium

Variable Acceleration: Analyzing a Non-Uniformly Accelerated Motion

An object moves along a straight path with an acceleration given by $$a(t)=\frac{12}{(t+2)^2}$$ m/s²

Extreme

Vector Addition in Two-Dimensional Motion

An object is launched with a horizontal velocity of $$30\,m/s$$ and a vertical velocity of $$40\,m/s

Easy

Vector Decomposition in Displacement Measurements

A team conducts an experiment where a cart's displacement in two perpendicular directions is given b

Easy

Verifying Free Fall Acceleration

Design an experiment to verify the acceleration due to gravity using free-fall motion. Detail your m

Easy
Unit 3: Work, Energy, and Power

Block Under a Varying Force

A 2 kg block moves along a frictionless horizontal surface under the influence of a variable force g

Medium

Collision and Energy Loss Analysis

Two objects collide inelastically and stick together. Object A has mass 3 kg moving at 4 m/s, and Ob

Easy

Damped Oscillations and Energy Dissipation in a Mass-Spring System

A damped harmonic oscillator with mass m = 2 kg, spring constant k = 50 N/m, and damping coefficient

Extreme

Elastic Potential Energy in a Spring System

A spring with a spring constant of $$k = 200\,N/m$$ is compressed by 0.25 m from its equilibrium pos

Easy

Energy Conservation on a Frictional Ramp with Calculus Approach

A 2-kg block slides down a straight inclined ramp from a height of $$h = 2 \;\text{m}$$. The ramp is

Medium

Energy Dissipation due to Friction

A 10 kg block is pushed along a horizontal surface with a coefficient of kinetic friction $$\mu = 0.

Medium

Energy Loss Due to Position-Dependent Friction

A block of mass $$m = 5 \;\text{kg}$$ slides along a horizontal surface. The coefficient of kinetic

Medium

Equilibrium Points from a Potential Energy Function

A particle of mass 4 kg experiences a potential energy given by $$U(x) = (x - 2)^2 - (2*x - 3)^3$$ (

Hard

Experiment on Electric Motor Power Output

Design an experiment to measure the power output of an electric motor used in a small robotic car.

Hard

Experimentally Determining the Effect of Angle on Work Done

A crate is pulled over a horizontal surface with a rope, where the angle of the rope with the horizo

Easy

Free‐Fall Impact Energy Experiment

In this experiment, a small cart is dropped from a known height and allowed to free-fall until it im

Hard

FRQ 5: Assessing the Independence of Power Output from Time Interval

A magazine article claims that two engines delivering the same work are equally powerful, regardless

Medium

FRQ 9: Interpreting Drop Test Kinetic and Potential Energy Data

A study provides experimental data for a 3 kg ball dropped from various heights, with the measured s

Medium

FRQ 12: Analysis of Cyclist Power Output During a Ride

A cyclist’s performance is monitored by a power meter during a ride. The measured power output over

Easy

FRQ 14: Calculus Analysis of Work Done on an Object with a Time-Varying Force

An object with a mass of 3 kg is subjected to a force that varies with time according to the equatio

Hard

FRQ 15: Energy Conservation in an Oscillating Spring–Mass System

A 2-kg mass attached to a spring (with spring constant k = 200 N/m) oscillates horizontally. A displ

Medium

FRQ 18: Work–Energy Analysis of a Decelerating Elevator

An elevator with a mass of 1200 kg decelerates uniformly as it approaches a floor. A motion analysis

Hard

FRQ 19: Analysis of Force–Time Data in a Crash Test

During a crash test, the force experienced by a dummy is recorded as a function of time. The force–t

Extreme

FRQ 19: Equilibrium Points from a Nonlinear Potential Energy Function

A report presents the nonlinear potential energy function $$U(x) = (x - 2)^2 - (2 * x - 3)^3$$ and c

Hard

Horizontal Pulling Work Experiment

A crate is pulled along a horizontal floor by a worker using a rope that makes a constant angle with

Easy

Hydraulic Press Work Calculation Experiment

A hydraulic press compresses a metal block. The pressure in the hydraulic fluid varies with displace

Hard

Instantaneous Power in a Variable Force Scenario

An object is subjected to a time-dependent force given by $$F(t)=5*t$$ N, and its displacement is de

Hard

Potential Energy Curve Analysis

An object of mass 4 kg moves in a potential energy field described by $$U(x) = (x-1)^2 - 0.5*(x-2)^3

Hard

Potential Energy Curve of a Diatomic Molecule

The interatomic potential energy of a diatomic molecule can be approximated by the function $$U(r) =

Hard

Power Output in Elevator Lifting

A motor lifts an elevator of mass 500 kg at a constant speed of 2.5 m/s over a vertical displacement

Easy

Power Output Variation in a Machine

An object is being moved along a straight path by a constant force of 10 N. The displacement as a fu

Medium

Relationship Between Force and Potential Energy

For a conservative force, the relationship between force and potential energy is given by $$F(x) = -

Medium

Rotational Work and Energy Experiment

A uniform disk with a moment of inertia $$I = 0.5\,kg\cdot m^2$$ is subjected to a variable torque d

Medium

Rotational Work-Energy Analysis in a Flywheel

A flywheel with a moment of inertia $$I = 20\,kg\cdot m^2$$ is accelerated from rest to an angular s

Medium

Spring Energy Experiment: Measuring Nonlinear Work

A spring exhibits a force-displacement relationship given by $$F(x) = k*x + a*x^3$$, where $$k = 50\

Hard

Variable Mass Rocket Energy Analysis

A rocket with an initial mass of 1500 kg expels fuel and decreases its mass linearly to 1200 kg over

Extreme

Vertical Lift Work Measurement Experiment

In this vertical lift experiment, an object is raised by a motor and its applied force and displacem

Medium

Work Done Against Friction on an Inclined Plane

A 5-kg box slides down a 10-m long inclined plane that makes an angle of 30° with the horizontal. Th

Hard

Work Done by Friction: Calculus Approach

A 5 kg block slides on a horizontal surface. The coefficient of kinetic friction varies with positio

Hard

Work Done in a Resistive Medium

A particle of mass 1 kg moves in a straight line under the influence of two forces: a constant propu

Extreme

Work-Energy Theorem with Air Resistance

A 0.2-kg ball is thrown vertically upward with an initial speed of $$40 \;\text{m/s}$$. Air resistan

Medium
Unit 4: Systems of Particles and Linear Momentum

Assessing the Effects of Impact Duration on Impulse

In an experiment, a baseball is struck with varying impact durations. The impulse delivered during e

Easy

Astronaut Momentum Conservation

An astronaut with a total mass of 89 kg is floating in space near her shuttle. To reorient herself,

Easy

Billiard Ball Collision and Impulse Analysis

In a game of billiards, a moving ball (mass $$0.17\,kg$$, speed $$2\,m/s$$) collides with a stationa

Easy

Center of Gravity vs. Center of Mass in a Tilted Rod

A uniform rod is supported on one end by a fulcrum. In an experiment, additional weights were placed

Medium

Center of Mass Determination for a Composite L-Shaped Object

Students perform an experiment to determine the center of mass of an L-shaped, composite board. The

Easy

Center of Mass of a Composite Object

A composite object is constructed by rigidly attaching two uniform rectangular plates. Plate A has a

Medium

Center of Mass of a Non-uniform Rod

Consider a rod of length L = 1 m with a linear density given by $$\lambda(x)=10+6*x$$, where x is me

Medium

Center of Mass of a Non-uniform Rod

A thin rod of length 1.0 m has a linear mass density given by $$\lambda(x) = 5 + 3*x$$ (kg/m), where

Medium

Center of Mass of a Non-Uniform Rod

A thin rod of length $$0.8$$ m has a linear mass density given by $$\lambda(x) = 5 + 3*x^2$$ (kg/m),

Easy

Center of Mass of a Triangular Plate

A thin, homogeneous triangular plate has vertices at (0,0), (4,0), and (0,3) in meters. Determine it

Hard

Center of Mass of an L-Shaped Object

An L-shaped object is formed by joining two uniform rods at one end. One rod is horizontal with a le

Easy

Center-of-Mass of a Ladder with Varying Linear Density

A ladder of length $$L=2.0\,m$$ has a vertical linear mass density given by $$\lambda(y)=3.0(1+y)$$

Medium

Center-of-Mass Shift in an Internal Explosion

Three masses are arranged on a frictionless horizontal surface: m1 = 1 kg at (0,0), m2 = 2 kg at (1,

Medium

Complex Rotational and Translational Collision Involving Center of Mass

A uniform rod of length $$2$$ m and mass $$4$$ kg is pivoted frictionlessly about its center. A smal

Extreme

Composite Body Center of Mass Calculation

A composite system consists of a uniform rectangular block (mass $$5\,kg$$, width $$0.4\,m$$) and a

Medium

Conservation of Linear Momentum in a Glider Collision

On a frictionless air track, two gliders collide. The experimental data below list the masses and ve

Easy

Damped Harmonic Oscillator Analysis

A mass-spring system subject to damping has its displacement described by the function $$x(t)=0.2\,e

Medium

Elastic Collision in Two Dimensions

Two particles collide elastically on a frictionless plane. Particle 1 (mass $$m_1=1.0\,kg$$) initial

Hard

Elastic Collision: Two Gliders on an Air Track

Two gliders on an air track experience a head-on elastic collision. Glider X (mass = 1 kg) initially

Hard

Explosive Separation and Momentum Conservation

A 2 kg projectile traveling at 15 m/s explodes into two equal fragments (1 kg each). One fragment mo

Hard

Fragmentation and Impulse

A stationary explosive device of total mass $$5\,\text{kg}$$ breaks into two fragments. One fragment

Medium

FRQ 3: Motion of the Center of Mass under External Force

An object of mass $$10 \ kg$$, initially at rest, is subjected to an external force given by $$F(t)

Easy

FRQ 7: Inelastic Collision Analysis

Two carts collide on a frictionless track and stick together. Cart X (mass = 2 kg) moves at +3 m/s a

Medium

FRQ 15: Center of Mass versus Center of Gravity

A popular science article claims that for a complex-shaped satellite orbiting Earth, the center of m

Medium

Glider Collision on a Frictionless Air Track

Two gliders on an air track are involved in a head-on elastic collision. The data for the gliders is

Medium

Impulse and Average Force on a Punted Football

A football (mass = 0.4 kg) is kicked such that its speed increases from 0 to 30 m/s in 8 ms. (a) Use

Easy

Impulse and Momentum in Ball Kicking

In an experiment, a soccer player kicks a 0.4 kg ball. A force sensor records the force exerted by t

Medium

Impulse Delivered by a Variable Force

A particle experiences a time-dependent force along the x-axis given by $$F(t)=4*t^2 - 12*t + 9$$ N

Medium

Impulse from a Time-Varying Force with Graph Stimulus

A force sensor records the force applied to a hockey puck as a function of time while a player strik

Medium

Impulse from a Variable Force Graph

A force acting on an object is given by the time-dependent function $$F(t)=200\,\sin\left(\frac{\pi*

Hard

Impulse in a Rebounding Ball

A 0.5-kg ball is dropped from a height of 2 m onto a rigid surface. It rebounds with a speed of 1.2

Easy

Integrated Analysis of Momentum and Center of Mass in a Multi-Stage Experiment

In a complex experiment, a projectile traveling at 10 m/s with a mass of 5.0 kg breaks apart mid-fli

Extreme

Momentum Analysis of a Variable Mass Rocket

A rocket in space, free from external gravitational forces, expels fuel continuously. Its mass is gi

Extreme

Momentum Conservation in a Skaters' Push-Off

Two ice skaters start from rest on frictionless ice. Skater A has a mass of 50 kg and, after pushing

Easy

Motion of the Center of Mass under Applied Force

Two blocks, with masses 3 kg and 5 kg, are connected by a massless rope on a frictionless surface. A

Easy

Multi-Dimensional Inelastic Collision Analysis

Two particles undergo a perfectly inelastic collision. Particle A (mass = 2 kg) moves with velocity

Extreme

Multi-object Collision Dynamics

Three carts on a frictionless track collide and stick together. The carts have masses and initial ve

Extreme

Projectile and Cart Collision: Trajectory Prediction

A 0.2 kg projectile is launched horizontally at 10 m/s from a 20 m high platform. At the same moment

Hard

Rocket Propulsion and Center of Mass Dynamics

A rocket has an initial total mass of $$M_0 = 5000\;kg$$ and burns fuel such that its mass decreases

Extreme

Stability and Center of Mass of a Structure

A T-shaped structure is formed by joining a horizontal rod (mass $$6\,kg$$, length $$2\,m$$) at its

Easy

Velocity Determination under a Variable Force

A 2 kg block is pulled on a frictionless surface by a variable force given by $$F(x)=3*x$$ (N) where

Medium

Vibrational Motion: Coupled Oscillators

Two masses (m1 = 0.5 kg and m2 = 0.5 kg) are connected by a spring with spring constant k = 200 N/m

Hard
Unit 5: Rotation

Analysis of a Variable Moment of Inertia System

A rotating disk has a moment of inertia that decreases over time as its arms retract, following the

Extreme

Angular Kinematics on a Rotating Platform

A rotating platform starts from rest and accelerates with a constant angular acceleration $$\alpha$$

Easy

Angular Kinematics with Variable Angular Acceleration

A disk rotates with a non-uniform angular acceleration given by $$\alpha(t) = 4*t$$ (in rad/s²). The

Medium

Angular Momentum Conservation in Explosive Separation

A symmetric rotating disk of mass $$M$$ and radius $$R$$ is spinning with an angular velocity $$\ome

Hard

Angular Momentum Conservation on a Rotating Platform

A child stands on a circular merry-go-round. Initially, the child is at 2.5 m from the center and th

Easy

Angular Momentum in Explosive Separation

A spinning disk with an initial angular velocity $$\omega_i$$ undergoes an explosion that breaks it

Extreme

Application and Critical Review of the Parallel Axis Theorem

A disk of radius $$R$$ and mass $$M$$ has a moment of inertia about its center of mass given by $$I_

Hard

Composite Body Rotation

A composite object is formed by welding a solid disk to a thin rod. The disk has mass $$M$$ and radi

Medium

Composite Rotational and Translational Dynamics in Rolling Motion

A hoop of mass m and radius R rolls down an inclined plane. Initially, it slides and rolls, so that

Hard

Design and Analysis of a Flywheel Energy Storage System

A flywheel, modeled as a solid disk, is used for energy storage. The flywheel has a mass $$M=50 \tex

Medium

Designing a Rotational System with Specified Kinetic Energy

A researcher is tasked with designing a rotational system that must store a specified amount of kine

Hard

Dynamic Stability of a Rotating Space Station

A rotating space station initially spins with angular velocity $$\omega_i$$ and has a moment of iner

Hard

Dynamics of a Rotating System with Friction

A rotating disk with moment of inertia $$I$$ is subject to a frictional torque that is proportional

Hard

Experimental Determination of Torsional Oscillations

Design an experiment to measure the torsional oscillation period of a rod suspended by a wire with a

Hard

FRQ 3: Application of the Parallel Axis Theorem

A solid disk has a mass M = 10.00 kg and a radius R = 0.50 m. Its moment of inertia about its centra

Easy

FRQ 4: Rotational Kinematics of a Disk

A disk starts from rest and rotates with a constant angular acceleration. After t = 4.00 s, the disk

Easy

FRQ 17: Moment of Inertia of a Non-Uniform Rod

A rod of length L = 2.00 m has a density that varies with position according to $$\rho(x) = \rho_0 *

Extreme

Investigation of Angular Acceleration from Experimental Data

In an experiment, the angular displacement (in radians) of a rotating object was recorded at various

Easy

Kinetic Energy Redistribution in Rotating Systems

A rotating disk initially has two weights attached at its rim, resulting in a moment of inertia $$I_

Medium

Lever Torque Application

A mechanic uses a long lever to lift a heavy object. A force of $$F = 100 \text{ N}$$ is applied at

Easy

Net Torque and Angular Acceleration Calculation

A disc with a moment of inertia of 0.5 kg m^2 is acted upon by two tangential forces: 10 N at a radi

Medium

Relation Between Linear and Angular Velocity on a Rotating Disk

In an experiment, a rotating disk is used to measure the linear speed of points located at different

Easy

Rolling Motion with Transition from Slipping to Pure Rolling

A solid sphere of mass m and radius R is initially sliding and rolling down an inclined plane with a

Hard

Rotational Equilibrium Analysis of a Beam

A beam is in static equilibrium under the influence of several forces applied at different distances

Medium

Rotational Kinematics: Angular Displacement via Integration

A motor provides an angular acceleration given by $$\alpha(t) = 4 - 0.5*t$$ (in rad/s²) for $$0 \le

Hard

Time-dependent Torque and Angular Momentum Change

A disk is subjected to a time-dependent torque described by $$\tau(t) = 10 * \cos(t)$$ N*m. The disk

Hard

Time-Resolved Analysis of Angular Acceleration

A wheel's angular velocity is given by $$\omega(t)= 3t^2 + 2t\,rad/s$$. Calculate its angular accele

Easy

Torque and Angular Acceleration Relationship

An experiment measures the response of a rotating object to different applied torques. A graph is pl

Medium

Torque and the Right-Hand Rule Verification Experiment

Design an experiment to verify the direction of the torque vector as predicted by the right-hand rul

Hard

Torsion Pendulum and Restoring Torque Error

In a torsion pendulum experiment, a disk is suspended from a wire and its angular displacement due t

Hard

Verification of the Parallel Axis Theorem

A solid disk of mass M = 4 kg and radius R = 0.5 m is considered. The moment of inertia about its ce

Medium

Wrench Torque Analysis

A mechanic uses a wrench to loosen a bolt. Consider a wrench of length L = 0.3 m. In part (a), the m

Easy
Unit 6: Oscillations

Calculus Approach to Maximum Velocity in SHM

Consider an oscillator whose displacement is given by the sinusoidal function $$y(t) = A \sin(\omega

Easy

Calculus of Oscillatory Motion: Velocity and Acceleration

A researcher analyzes the displacement of a mass-spring oscillator given by the function $$y(t) = 0.

Medium

Calculus-Based Analysis of Velocity and Acceleration

Consider an oscillator whose displacement is defined by: $$x(t) = 0.1 * \sin(6*t)$$ (a) Differenti

Hard

Calculus-Based Prediction of Maximum Speed

A photogate system is set up to record the speed of a mass-spring oscillator. Answer the following p

Easy

Comparative Analysis: Spring-Mass System vs. Pendulum Oscillations

A researcher compares the oscillatory behavior of a horizontal spring-mass system with that of a sim

Medium

Comparing Sinusoidal and Non-Sinusoidal Oscillatory Motion

In some experiments, the oscillatory motion observed may deviate from a pure sinusoid. Consider a sy

Hard

Comparison of SHM in Spring and Pendulum

Compare the simple harmonic motions of a mass-spring oscillator and a simple pendulum (under the sma

Medium

Coupled Oscillations in a Two-Mass Spring System

Consider two masses, $$m_1$$ and $$m_2$$, connected by a spring with spring constant $$k$$. Addition

Extreme

Damped Oscillations in a Spring-Mass System

In an experiment exploring damped oscillations, a block attached to a spring is set oscillating on a

Hard

Damped Oscillatory Motion Analysis

A mass-spring system undergoing damped oscillations has a damping force given by \(F_d = - b * v\),

Extreme

Data Analysis of Damped Oscillations

A damped oscillator is described by the function: $$y(t) = 0.1 * e^{-\frac{b * t}{2m}} * \cos(\omeg

Extreme

Data Analysis of Oscillatory Motion with Damping Effects

A student report claims that 'damped oscillations follow the exact same simple harmonic law as undam

Hard

Dependence of Maximum Speed on Amplitude

For a spring-mass oscillator undergoing simple harmonic motion, analyze how the maximum speed $$v_{m

Easy

Deriving Velocity and Acceleration in SHM

A particle oscillates according to the equation $$y(t) = 0.03\sin(12t + \frac{\pi}{4})$$, where \(t\

Hard

Determination of Spring Constant via Oscillation Period

An experiment is set up to determine the spring constant k by measuring the period of oscillations f

Medium

Determination of the Spring Constant from Experimental Force-Displacement Data

In an experiment to determine the spring constant, a series of force and displacement measurements w

Medium

Determining Spring Constant from Experimental Data

An experiment on a spring produced the following data relating displacement $$x$$ (in meters) to for

Medium

Determining Spring Constant Through Oscillation Energy Analysis

An experimental report claims that the spring constant k can be precisely determined by equating the

Easy

Determining the Phase Constant from Experimental Data

An experiment measuring the displacement of a simple harmonic oscillator produced the following data

Medium

Determining the Spring Constant from SHM Measurements

A block of mass $$m$$ is attached to a horizontal spring on a frictionless surface. When displaced f

Medium

Differentiating SHM: Velocity and Acceleration

A block attached to a spring oscillates on a frictionless track and its position is recorded by a se

Medium

Differentiation in SHM: Velocity and Acceleration

The position of an oscillator is given by the function $$y(t)=0.05 * \sin(10*t+0.3)$$ (with $$y$$ in

Medium

Driven Oscillator and Resonance

A forced mass-spring-damper system is subject to an external driving force given by $$F(t) = F_0\sin

Extreme

Dynamic Equilibrium in a Vertical Oscillator

A researcher studies the oscillatory motion of a block attached to a vertical spring. The block is d

Medium

Energy Conservation in a Mass–Spring Oscillator

Examine energy conservation in a mass–spring system and its experimental verification.

Medium

Energy Conservation in a Spring Oscillator

A block of mass $$m = 0.2\,kg$$ oscillates horizontally on a frictionless surface attached to a spri

Easy

Energy Transformations in a Spring Oscillator

A block attached to a horizontal spring oscillates with amplitude $$A$$. Consider the energy transfo

Medium

Energy Transformations in SHM

Consider a block attached to a spring undergoing simple harmonic motion with displacement $$x(t)=A\s

Medium

Error Analysis in SHM Measurements

A student conducting an experiment on a mass-spring oscillator records the following period measurem

Extreme

Evaluating Damped Oscillatory Motion Effects

A mass-spring oscillator with mass $$m = 0.5 \; kg$$, spring constant $$k = 100 \; N/m$$, and dampin

Hard

Evaluating Experimental Uncertainties in SHM Measurements

Accurate measurement of the oscillation period is crucial in SHM experiments. In this context, uncer

Hard

Experimental Analysis of SHM Data

The displacement data for a mass-spring system were recorded during a laboratory experiment. The fol

Medium

Forced Oscillations and Resonance

A mass-spring system is driven by an external force of the form \(F(t) = F_0 \cos(\omega_d t)\) and

Extreme

FRQ 4: Vertical Motion in a Spring–Block System

A vertical spring–block system is investigated. The equilibrium displacement for different masses at

Medium

FRQ 6: Pendulum Motion and the Small Angle Approximation

A simple pendulum is tested for various small angular displacements. The measured periods for oscill

Easy

FRQ 10: Differential Equation of a Horizontal Mass-Spring System

Consider a mass attached to a horizontal spring on a frictionless surface. Answer the following:

Hard

FRQ 12: Deriving Velocity and Acceleration Functions

Starting with the position function for a simple harmonic oscillator: $$y = A \sin(\omega t + \phi_0

Hard

FRQ 13: Determining Angular Frequency from Oscillation Data

An oscillator’s motion is described by $$y = A \sin(\omega t + \phi_0)$$. A set of position measurem

Medium

FRQ 19: Vertical Oscillator Dynamics

A mass is attached to a vertical spring. When displaced by a distance $$y$$ from its equilibrium pos

Hard

FRQ5: Sinusoidal Description of Oscillatory Motion and Phase Determination

A mass-spring system oscillates with an amplitude of $$A = 0.06\,m$$ and a frequency of $$f = 2.0\,H

Hard

FRQ7: Period of a Simple Pendulum under the Small-Angle Approximation

A simple pendulum consists of a mass attached to a massless string of length \(L\). Answer the foll

Easy

FRQ17: Calculus-Based Derivation of Velocity and Acceleration in SHM

Consider a mass undergoing simple harmonic motion described by the displacement function: $$x(t)= A

Medium

FRQ19: Coupled Oscillators – Normal Modes of a Two-Mass, Three-Spring System

Consider a system in which two identical masses \(m\) are connected in series with three identical s

Extreme

Impact of Spring Constant Variation on Oscillatory Motion

A researcher studies how varying the spring constant affects the oscillatory motion of a block attac

Medium

Mechanical Energy in SHM

A researcher attaches a block of mass $$m = 0.05 \; kg$$ to a horizontal spring with force constant

Medium

Oscillation Frequency's Dependence on Mass and Spring Constant

A research claim suggests that 'doubling the mass of an oscillating system will always decrease the

Easy

Pendulum Approximation and Small-Angle Motion

A simple pendulum of length $$L$$ oscillates with small amplitude. Using the small-angle approximati

Medium

Pendulum Motion: Small-Angle Approximation

A simple pendulum of length $$L = 0.80\,m$$ is released from a small angle. (a) Using the small-angl

Easy

Pendulum Oscillations: Small Angle Approximation

A simple pendulum of length $$L=1.5\,\text{m}$$ is set into small-amplitude oscillations. (a) Derive

Medium

Pendulum Period and Data Analysis

Explore the period of a simple pendulum and compare experimental data with theoretical predictions.

Easy

Period and Frequency Determination

A mass on a spring is observed to take $$0.20\,s$$ to move from its maximum displacement on one side

Easy

Spring Force and Energy Analysis

A spring with a force constant $$k = 350 \; N/m$$ and a natural (unstretched) length of 20 cm is str

Easy

Stress Testing of Oscillatory Limits

In an advanced experiment, a student increases the amplitude of oscillation for a spring–mass system

Extreme
Unit 7: Gravitation

Application of Kepler's Second Law to Orbital Motion

Kepler's Second Law states that a line joining a planet and the Sun sweeps out equal areas in equal

Hard

Application of Kepler's Third Law

A planet orbits its star in an almost circular orbit with radius a. Use Kepler's Third Law to analyz

Medium

Areal Velocity and Angular Momentum in Planetary Motion

A planet of mass $$m$$ orbits a star while conserving its angular momentum $$L$$. Answer the followi

Medium

Barycenter Determination in a Sun-Planet Analog with Magnetic Models

A lab experiment simulates the Sun-Earth system using scaled models equipped with magnetic component

Hard

Calculating Gravitational Potential in a Non-Uniform Planet

A researcher investigates the gravitational potential inside a planet with a radially varying densit

Extreme

Calculus Analysis of Gravitational Potential Energy

Gravitational potential energy (GPE) plays a crucial role in systems influenced by gravity. Answer t

Hard

Calculus Derivation of Kepler's Second Law

Kepler's Second Law states that a line joining a planet and the Sun sweeps out equal areas during eq

Hard

Cannonball Trajectory in a Non-Uniform Gravitational Field

An experiment studies the trajectory of a cannonball launched at a high angle to analyze projectile

Medium

Derivation of Gravitational Potential Energy

Starting from Newton's law of gravitation given by $$F(r) = -G * \frac{M * m}{r^2}$$, derive the exp

Hard

Derivation of Gravitational Potential Energy Difference

A space probe's gravitational potential energy is given by $$U(r) = -\frac{G M m}{r}$$. Answer the f

Medium

Derivation of Kepler's Second Law from Angular Momentum Conservation

Using the principle of conservation of angular momentum, derive Kepler's Second Law which states tha

Easy

Derivation of the Virial Theorem for Gravitational Systems

Derive the virial theorem for a gravitationally bound system and apply it to a hypothetical star clu

Hard

Deriving Gravitational Potential from Gravitational Force

The gravitational potential \(V(r)\) is related to the gravitational force by calculus. (a) Show th

Medium

Designing a Satellite Orbit Experiment

An engineering team is planning an experiment to study satellite orbits around Earth. (a) List the

Medium

Designing a Satellite's Stable Orbit

A space agency plans to deploy a satellite into a stable circular orbit around a planet. The gravita

Medium

Determination of Gravitational Parameter (GM) from Satellite Orbits

An observational study is undertaken to determine the gravitational parameter (GM) of a planet by an

Medium

Determining Gravitational Potential from Force Field Data

An experiment measures the gravitational force as a function of distance, providing data described b

Hard

Determining the Gravitational Constant using a Torsion Balance

An experimental apparatus utilizing a torsion balance is used to measure the gravitational forces be

Medium

Dynamic Modeling of Planetary Motion in a Binary Star System

Consider a binary star system where two stars of comparable mass orbit their common center of mass i

Extreme

Eccentricity and Elliptical Orbits

Discuss the role of eccentricity in elliptical orbits and derive the orbit equation in polar coordin

Hard

Effects of Non-Spherical Mass Distribution on Satellite Orbits

A planet is not perfectly spherical but exhibits a slight oblateness, introducing a perturbative ter

Extreme

Energy Conversion in a Gravitational Slingshot Maneuver

A spacecraft performing a gravitational slingshot maneuver around a planet converts gravitational po

Hard

Escape Velocity and Energy Conservation

Consider an object of mass m escaping from a planet with mass M, where gravitational potential energ

Medium

Examining Relativistic Corrections to Newtonian Gravity

In strong gravitational fields, relativistic corrections become significant compared to Newtonian pr

Extreme

FRQ 8: Elliptical Orbit – Perihelion and Aphelion Distances

An object travels in an elliptical orbit with a semimajor axis $$a$$ and eccentricity $$e$$. Answer

Medium

FRQ 14: Work Done in Changing Orbital Radius

The work done against gravity in changing the orbital radius of an object is computed by integrating

Medium

FRQ 16: Graphical Analysis of Gravitational Potential Energy vs. Height

The graph provided shows experimental data for gravitational potential energy (in joules) versus hei

Medium

FRQ 18: Non-Uniform Circular Motion in a Varying Gravitational Field

An object in orbit around a planet experiences non-uniform circular motion due to variations in the

Extreme

FRQ 19: Relativistic Corrections and Perihelion Precession

General relativity provides corrections to Newtonian gravity that can explain the observed perihelio

Extreme

FRQ 20: Determining the Mass of a Central Body from Satellite Orbits

A satellite is observed to orbit a celestial body with a period $$T$$ and at a radius $$r$$. Using t

Medium

Gravitational Energy in a Three-Body System

Consider three point masses m1, m2, and m3 placed at the vertices of a triangle. Analyze the gravita

Hard

Gravitational Energy Trade-offs in a Multi-Body System

Examine the experimental data provided for gravitational potential energies between different pairs

Extreme

Gravitational Interaction between Two Bodies

Consider two masses m1 and m2 separated by a distance r in deep space. Investigate the gravitational

Easy

Mathematical Modeling of Tidal Forces

Using the provided data on tidal forces measured at different distances, analyze how the tidal force

Extreme

Newton vs. Einstein: Conceptual Analysis of Gravity

Compare and contrast Newton's Law of Gravitation with Einstein's theory of General Relativity. Answe

Extreme

Newtonian Approximation of Gravitational Lensing

Although gravitational lensing is accurately described by General Relativity, a simplified Newtonian

Extreme

Optimization of Orbital Maneuvers in Multi-Stage Rockets

A multi-stage rocket performs orbital maneuvers to transition from a low Earth orbit to a higher geo

Extreme

Orbit Stability from Potential Energy Diagrams

Analyze the provided potential energy diagram and determine the regions corresponding to stable and

Hard

Orbital Transfer and the Hohmann Maneuver

A spacecraft performs a Hohmann transfer to move from a circular orbit of radius $$r_1$$ to a higher

Hard

Pendulum with Variable Amplitude: Nonlinear Oscillation Effects

In this experiment, a simple pendulum is used to study how the oscillation period changes with ampli

Hard

Planetary Orbit Analysis via Kepler's Third Law

A researcher is studying the orbits of several planets around a distant star. Observations suggest t

Medium

Simulating Satellite Orbital Decay and Atmospheric Drag

An experimental simulation is set up to study the orbital decay of a satellite due to atmospheric dr

Extreme

Speed Variation in Elliptical Orbits via Angular Momentum Conservation

In an elliptical orbit, a satellite’s speed varies along its path. Using the conservation of angular

Medium

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FAQWe thought you might have some questions...
Where can I find practice free response questions for the AP Physics C: Mechanics exam?
The free response section of each AP exam varies slightly, so you’ll definitely want to practice that before stepping into that exam room. Here are some free places to find practice FRQs :
  • Of course, make sure to run through College Board's past FRQ questions!
  • Once you’re done with those go through all the questions in the AP Physics C: MechanicsFree Response Room. You can answer the question and have it grade you against the rubric so you know exactly where to improve.
  • Reddit it also a great place to find AP free response questions that other students may have access to.
How do I practice for AP AP Physics C: Mechanics Exam FRQs?
Once you’re done reviewing your study guides, find and bookmark all the free response questions you can find. The question above has some good places to look! while you’re going through them, simulate exam conditions by setting a timer that matches the time allowed on the actual exam. Time management is going to help you answer the FRQs on the real exam concisely when you’re in that time crunch.
What are some tips for AP Physics C: Mechanics free response questions?
Before you start writing out your response, take a few minutes to outline the key points you want to make sure to touch on. This may seem like a waste of time, but it’s very helpful in making sure your response effectively addresses all the parts of the question. Once you do your practice free response questions, compare them to scoring guidelines and sample responses to identify areas for improvement. When you do the free response practice on the AP Physics C: Mechanics Free Response Room, there’s an option to let it grade your response against the rubric and tell you exactly what you need to study more.
How do I answer AP Physics C: Mechanics free-response questions?
Answering AP Physics C: Mechanics free response questions the right way is all about practice! As you go through the AP AP Physics C: Mechanics Free Response Room, treat it like a real exam and approach it this way so you stay calm during the actual exam. When you first see the question, take some time to process exactly what it’s asking. Make sure to also read through all the sub-parts in the question and re-read the main prompt, making sure to circle and underline any key information. This will help you allocate your time properly and also make sure you are hitting all the parts of the question. Before you answer each question, note down the key points you want to hit and evidence you want to use (where applicable). Once you have the skeleton of your response, writing it out will be quick, plus you won’t make any silly mistake in a rush and forget something important.