work and power

equation for work done

equation for work done

work done = force x distance moved

work done =

energy transferred

equation for gravitational potential energy

gravitational potential energy =

mass x gravitational field strength x height

equation for kinetic energy

kinetic energy = ½ x mass x speed2

equation for power

power = work done/time taken

definition of power

the rate of energy transfer/the rate of doing work

definition of work done

• work done on an object is the energy you put in (lift, stretch or speed up an object)

• the energy gained can be in the form of:

  • GPE

  • kinetic energy

  • work

  • elastic potential energy

  • etc.