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A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 15.2 m/s in 12.7...

A 1.50 ✕ 103-kg car starts from rest and accelerates uniformly to 15.2 m/s in 12.7 s. Assume that air resistance remains constant at 400 N during this time. (a) Find the average power developed by the engine. hp

(b) Find the instantaneous power output of the engine at t = 12.7 s, just before the car stops accelerating. hp

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