Solve the all parts of following question:
Question: A 1.50 x 103-kg car starts from rest and accelerates uniformly to 17.3 m/s in 12.0 s. Assume that air resistance remains constant at 400 N during this time.
Part A: Find the average power developed by the engine?
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Part B: Find the instantaneous power output of the engine at t = 12.0 s, just before the car stops accelerating.
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I want help to find the average power developed by the engine.