A 60-kg woman runs up a flight of stairs having a rise of 4.0 m in a time of 4.2 s.What average power did she supply?

Name: A 60-kg woman runs up a flight of stairs having a rise of 4.0 m in a time of 4.2 s.What average power did she supply?
Brand: Quizplus
Rating: 4.9 (48 reviews)

Question

Quizplus · Accepted Answer

The work done is equal to the gravitational potential energy gained, which is mgh = 60 kg * 9.8 m/s² * 4.0 m = 2352 J. The power is the work done divided by the time, so 2352 J / 4.2 s = 560 W.

A 60-Kg Woman Runs Up a Flight of Stairs Having