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Q. A 2.00 kg metal ball moving at a speed of 3m/s strikes a 1.00 kg wooden ball that is at rest. After collision, the speed of the metal ball is 1m/s. Assume momentum is conserved, what is the speed of the wooden ball?

Q. The reflecting surfaces of two intersecting flat mirrors are at the angle of 59. A light ray strikes the horizontal mirror, reflects off horizontal mirror, impinges on the raised mirror, reflects off the raised mirror and proceeds in the right-hand direction.

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