Physical Science Unit 4 Review

-Newton's Laws
1) Newtons 1st law: object stays at rest unless force applied
2) Newton's 2nd Law: F = Mass*Acceleration
3) Newton's 3rd Law: Every action has Equal and opposite reaction

-Gravity's Impact on Motion
What components or variables affect the force of Gravity?
-Distance between two objects and the mass of each object is responsible for the Gravitational Attraction Forces

-Machines
-Make work easier and faster
- 6 simple machines
1) wedge
2) wheel and axle
3) inclined plane
4) pulley
5) Screw
6) Lever

Mechanical Advantage is a ratio of how force comes out based on what you put in

Mechanical advantage is a number that says how much the machine multiplies your force

Mechanical advantage = force output/force input