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8. A 15.2 kg box is slid along the ground with a coefficient of kinetic friction of 0.569. a. If the box moves 8.04 m,

8. A 15.2 kg box is slid along the ground with a coefficient of kinetic friction of 0.569.

a. If the box moves 8.04 m, what is the amount of work done by friction on the box? (ans: 681 J)

b. If the box moves 6.12 m and has an acceleration of 0.972 m/s^2,what is the work done on the box by the applied force? (609 J)

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