An awesome Catapult that was made in class!

During our physics class, while we were learning acceleration,speed,force, and etc.. We decided to build a catapult since the arm puts acceleration,speed, and force into the invention. So our class decided to test how far we can launch the golf balls by[...]

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http://dailydiy.com/2009/11/05/an-awesome-catapult-that-was-made-in-class/

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