High school physics project of John Leeman, Stephen Clond, and David Abbott. I believe this was back in 2005-6. The tests where we shoot the penny at our arm were at VERY low pressure. The cannon shows that at higher speeds they could cause damage so please 'Don't try this at home'. Anyhow, this is a summary of the design, construction, and operation of the cannon shooting coins and a large steel slug. Narrated by Stephen Clond
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