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Skateboarding > General
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Skateboard Science
Find out how this extreme sport is governed by the principles of momentum, gravity, friction, and centripetal force. Learn skateboarding history, technology, and more.
http://www.exploratorium.edu/skateboarding/
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Skateboardgraphics.com
skateboardgraphics.com
http://www.skateboardgraphics.com/
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