Question

A 15 g marble moves to the right at 3.5 m/s and makes an elastic head-on collision with a 22 g marble. The
final velocity of the 15 g marble is 5.4 m/s to the left, and the final velocity of the 22 g marble is 2.0 m/s to
the right. What is the initial kinetic energy of the two marble system?

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Collisions

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