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8. A car (mass - 1221 kg) is moving along a straight, level road at a constant speed of 8.95 m/s. The car then speeds up to 3

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Answer #1

a)

work done on the car = increase in kinetic energy

work done on the car = 0.50 * 1221 * (35.6^2 - 8.95^2)

work done on the car = 724820 J

the work done on the car is 724820 J

b)

average power supplied = work done/total time taken

average power supplied = 724820/12.4

average power supplied = 58453 W

the average power supplied is 58453 W

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