At what rate is a 60.0-kg boy using energy when he sprints up a flight of stairs 10.0 m high in
8.00 s?
A. 75.0 W
B. 48.0 W
C. 735 W
D. 480 W
E. 4.80 kW

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  1. Power = F*d/t = Mg*d/t = 588*10/8 = 735 J/s = 735 Watts.

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