Extra Bounce

Produced by the Institute of Physics, this Physics to Go video shows a short demonstration that can be used to engage your students. The teacher notes include the equipment needed, tips and contain a full explanation of the physics involved.

This experiment is all about conservation of energy and momentum. Drop each ball separately and they do not bounce very high. Drop the small ball and large ball together, with the small ball on top, and most of the momentum from both balls is transferred to the small ball. Watch how high it bounces!

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• URL: http://stem.org.uk/rx6w2