Question

Peter’s body supplies a force of 500 N to run up a 10-m hill in 10 s. How much power is involved in Peter’s run up the hill?

Answer 1

Work done = (weight) · (height)

= (500 N) · (10 m)

= 5,000 joules

Power = (work done) / (time to do the work)

= (5,000 joules) / (10 s)

= 500 joules/sec

= 500 watts