A 2.3 103 kg car starts from rest and accelerates along a horizontal roadway to +17 m/s in 21 s. Assume that air resistance remains constant at -500 N during this time. Find(adsbygoogle = window.adsbygoogle || []).push({});

(a) the average power developed by the engine and

(b) the instantaneous power developed at t = 15 s.

I am really confused about this. If you can help, I would appreciate it. Thanks!

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# Homework Help: Accelerating car, kinematics problem

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