Physics (AS & A Level) · Oct / Nov 2018 · Paper 13 · Question 18

A girl of mass 50 kg runs up a flight of 20 steps in 7.0 seconds. Each step is 25 cm high. What is the useful average output power provided by the girl to climb the flight of steps?

1. A18 W
2. B36 W
3. C350 W
4. D2500 W

As printed in the paper