Catapults and Trebuchets

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=jGrhPdP9XkI

What's the difference between a catapult and a trebuchet? Both convert stored energy to movement energy, but in catapults the energy is stored via elasticity and in trebuchets it is stored by working against the ever pervasive force of gravity. Our transformable catapult/trebuchet comes with Investigate Box 7, which is available to purchase here: https://www.letterboxlab.com/product/...

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