A car moves 4 times as fast as another identical car.Compared with the slower car,the faster car has

Name: A car moves 4 times as fast as another identical car.Compared with the slower car,the faster car has
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Kinetic energy is proportional to the square of velocity. Since the faster car moves 4 times as fast as the slower car, its kinetic energy is (4)^2 = 16 times as much. Therefore, the faster car has 16 times the kinetic energy of the slower car. Thus, choice D is correct.

A Car Moves 4 Times as Fast as Another Identical