power in Watts = work in Joules per unit time
= m g h /t
= 81.5 * 9.81 * 2.70 / 15.50 Watts
By the way I do not believe it took the student 15.5 seconds to lift the weight. Do you have a typo?
A student in the fitness center lifts a weight with m = <81.5> kg from the floor to a height of <2.7> meters in a time of <15.50> seconds. Find the average power exerted by the student during this time. Give your answer in watts (W) and with 3 significant figures.
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