Posted by **AfterLife** on Sunday, July 31, 2011 at 11:53am.

I have an experiment in which I drop a tennis ball ,, and measure its rebound height in every bounce. one of the question regarding this experiment is - were the collisions elastic or not ? support with evidence. How do these forces magnitude compare with the weight of the ball ? ( the forces meant here are the impact force that were asked previously in the experiment )

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