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amyiish

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1. A 55 kg swimmer is standing on a stationary 235 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +5.3 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.

2.In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of +5.0 m/s, grabs him. The tackler holds onto the receiver, and the two move off together with a velocity of +2.6 m/s. The mass of the tackler is 119 kg. Assuming that momentum is conserved, find the mass of the receiver.

:yuck: