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Q. A 55 kg swimmer is standing on a stationary 210 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +4.8 m/s relative to the shore. Find the recoil velocity that the raft would have if there were no friction and resistance due to the water.

Q. Blocks with masses of 2 , 4 , and 6 are lined up in a row on a frictionless table. All three are pushed forward by a 56 force applied to the 2 block.How much force does the 4 block exert on the 6 block?

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