Formulas

density

mass / volume

distance travelled

speed x time

acceleration

change in velocity / time

kinetic energy

0\.5 x mass x velocity(square)

force

mass x acceleration

momentum

mass x velocity

work done

force x distance moved

power

work done / time

force exerted by a spring

spring constant x extension

gravity force

mass x gravitational field strength

potential energy

mass x height x gravitational field strength

weight

mass × gravitational field strength

resultant force

mass × acceleration

power

energy transferred / time

efficiency

useful output energy transfer / total input energy transfer

efficiency

useful power output / total power input

wave speed

frequency × wavelength

charge flow

current × time

potential difference

current × resistance

power

potential difference × current

power

(current)(squared) × resistance

energy transferred

power × time

energy transferred

charge flow × potential difference