Physics - formulas

weight

mass x gravitational field strength

force applied to a spring

Spring constant x extension

acceleration

change in velocity/time taken

momentum

mass x velocity

gravitational potential energy

mass x gravitational field strength x height

power

work done/time

efficiency

useful power output/total power output

charge flow

current x time

Power (using potential difference)

potential difference x current

energy transferred

power x time

density

mass/volume

work done

force x distance moved in direction of force

distance travelled

speed x time

resultant force

mass x acceleration

kinetic energy

0.5 x mass x (speed)^2

power (using energy transferred)

energy transferred/time

efficiency

useful output energy transfer/total input energy transfer

wave speed

frequency x wavelength

potential difference

current x resistance

power (using resistance)

current^2 x resistance

energy transferred (using charge flow)

charge flow x potential difference

pressure

Force normal to a surface/area of that surface

moment of a force

Force x distance (normal to direction of force)