(c) work and power

relationship between work done, force and distance moved in the direction of the force (4.11)

work done = force × distance moved

W = F × d

work done = ? (4.12)

energy transferred

relationship between gravitational potential energy, mass, gravitational field strength and height (4.13)

gravitational potential energy = mass × gravitational field strength × height

GPE = mgh

relationship between kinetic energy, mass and speed (4.14)

kinetic energy = ½ × mass × speed²

KE = ½ × mv²

link between gravitational potential energy, kinetic energy and work (4.15)

power is ? (4.16)

the rate of transfer of energy / the rate of doing work

relationship between power, work done (energy transferred) and time taken (4.17)

power = work done / time taken

P = W / t