THIS DAY IN SCIENCE: 1st Controlled Powered Flight in 1852

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Tennis Anyone ?

This may not be the conventional way of serving a tennis ball but it’s a great application of conservation of momentum.  As the ball and racket rebound off the ground, the racket transfers some of its momentum to the ball.  This launches the ball high enough to allow the tennis player to deliver the serve.  Give it a try – but don’t use an expensive racket!

How would you use this video in your class?  Please comment.

Do you have a favourite science of sport video?  Let’s share.  Send me the link at staoblog@stao.org

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