Monday, December 21, 2009

More Tennis Trivia

According to the U.S. Lawn Tennis Association, a tennis ball is supposed to bounce between 53 and 58 inches when it is dropped on concrete from a height of 100 inches. The concrete surface should be 4 inches thick.

3 comments:

  1. I wish they would be a little more specific, he says with an well-exercised eye roll...

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  2. Wonder who does all the testing?

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  3. that's an interesting job to find that stuff out

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