Use the spring-loaded action of a mousetrap to make a real working car. A mousetrap is a stellar example of converting potential energy to kinetic energy. The spring of the mousetrap is held back with a bunch of potential energy and, once released, snaps forward in a burst of kinetic energy. What if you could harness the release of energy to power a car? We'll show you how with the Mousetraps in Motion experiment.
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from Steve Spangler Science