This video describes the situation where a low mass ball and large mass ball fall towards a table. In this hypothetical situation both balls are perfectly elastic and they are dropped in a vertical line. The bottom ball hits the table first and rebounds. The smaller ball rebounds off of the bottom ball at a speed of 3V, where V is the velocity the objects had near the table. This material relates to Chapter 8 of OpenStax College Physics. PHY151
Prof. Greg Clements

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