Question

A boy of mass 50 kg runs up a staircase of 45 steps in 9 seconds. If the height of each step is 15 cm, find the power of the boy. ( g=10 m/s2​

Answer 1

Answer:

hope this help you thanks.

Answer 2

Answer:

Power of the boy is 375W

Explanation:

m=50kg

T=9s

g=10ms-²

F=mg

=> 50×10=500N

h=15m

Total height=45×15=675m

Therefore, S=675m

W=F×S=500×675=3375J

P=W/T=3375/9=375W