Each time he does one pushup, Jose, who has a mass of $75$kg$,$ raises his center of mass by $25$ cm$.$ He completes an impressive set of $150$ pushups in $5$ minutes, exercising at a steady rate.

Part A

If we assume that lowering his body has no energetic cost, what is his metabolic power during this workout?

Express your answer with the appropriate units.

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Part B

In fact, it costs Jose a certain amount of energy to lower his body$-$about half of what it costs to raise it$.$ If you include this in your calculation, what is his metabolic power?

Express your answer with the appropriate units.

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PP $=$

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