Inertia means that a rolling ball on a smooth, level surface will roll forever if nothing stops it. In fact, friction and air pushing against the moving ball will eventually bring it to a stop. But interesting things happen when a motionless object gets in the way of a moving one. Try this experiment and see for yourself.
Moving Magical Marbles with More Momentum than Most
Sunday, March 30, 2014
Moving Magical Marbles with More Momentum than Most
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