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A 3700-lb automobile (m = 1600 kg) starts from rest on a level road and gains a speed of 45 mi/ h (= 72 km/h) in 33 s. (a) What is the kinetic energy of the auto at the end of the 33 s? (b) What is the average net power delivered to the car during the 33-s interval? (c) What is the instantaneous power at the end of the 33-s interval assuming that the acceleration was constant?
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