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Q. A train is traveling up a 3.9 degree incline at a speed of 3.15 m/s when the last car breaks free and begins to coast without friction. a)how long does it take for the last car come to a rest momentarily? b) how far did the last car travel before momentarily coming to a rest?

Q. A 3 kg block accelerates at a rate twice that of a 6 kg block. Is the net force acting on the 3 kg block twice as large as that acting on the 6 kg block?

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