Work and power

• Work done = force x distance moved

  W = FD
• Work done is equal to energy transferred
• Gravitational potential energy = mass x gravitational field strength x height

  GPE = MGH
• Kinetic energy = 1/2 x mass x$speed^2$

  KE = 1/2 x M x $v^2$
• If work is done on an object, its KE or GPE will increase, but if work is done by an object, its KE or GPE will decrease
• Power is the rate of transfer of energy, or the rate of work done 
• Power = work done/time taken

  P = W/T