work done and power

• what is work

  energy shifted from one form to another
• whats the units for work, force and displacement

  work (joules - J)

  force (newtons - N)

  displacement (metres - m)
• formula for work done

  work done = force (newtons) x distance (metres)

  w = fs
• what is power

  rate that energy is shifted / transferred
• what is the formula of power

  work done / time taken
• what is the units for power

  watts (w)
• what is the formula for gravitational potential energy

  gravitational potential energy = mass x gravitational field strength x height: gpe = mgh