A 70-kg jogger runs up a long flight of stair in 4.0 seconds. The vertical height of the stairs is 4.5 meters. What will be the estimate power output of the jogger in watts?
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787.5 W
Explanation:
m = 70 kg
s = 4.5m
t = 4 s
F = 70 * 10 = 700N
Power = work done / time
W = F * s
= 700*4.5
= 3150 J
P = 3150/4
= 787.5 W
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