A 144-lb student races up stairs with a vertical height of 4.6 m in 4.5 s to get to a class on the second floor. How much power in watts does the

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A 144-lb student races up stairs with a vertical height of 4.6 m in 4.5 s to get to a class on the second floor. How much power in watts does the student expend in doing work against gravity?

_____________W

 

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