The Kid Should See This

The Stacked Ball Drop (and Supernovas) – Physics Girl

How is a supernova like a basketball, a bouncy ball, and a golf ball all stacked together? It’s all in what happens when you drop them. In this video, Physics Girl Dianna Cowern demonstrates the momentum transfer between two larger objects into a smaller object. Watch as the compression of the basketball and bouncy ball both springboard the golf ball high into the air. Really high.

And how is this like a supernova? Watch! Then try it out with two balls, then three, and if you can keep them vertically aligned, add a tennis ball or a small super bouncy ball into the mix to see how high you can get that top ball to go!

Related videos: More bouncing and more balls, including The Physics Behind a Curveball, Everynone: Ball, and Gravité: Objects falling with rhythm.

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