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May 15, 2008
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Happy and Sad Balls Happy and Sad Balls

WL0709      $5.75     


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An Inexpensive Alternative for Collision Studies

These polymer balls may look the same but they behave differently, making them the ideal choice for demonstrating the coefficient of restitution. The happy ball stores very little energy in collisions and bounces well. The sad ball stores a lot of energy and doesn't bounce.



WL0709 Happy and Sad Balls
In stock
$5.75





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