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CGPET 2017 Solved Paper

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Question : 18

Total: 150

Three objects A,B and C are kept in a straight line on a frictionless horizontal surface. These objects have masses M,M and 2M respectively. The object A moves towards B with a speed of 9m∕s and makes an elastic collision with it. There after, B makes completely inelastic collision with C. All motions occur in the same straight line. Find the final speed of the object C.

3m∕s
4m∕s
5m∕s
6m∕s

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