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8 May, 12:14

A 0.16 kg billiard ball moving at 1.20 m/s collides elastically with one of the same mass at rest. It continues at a speed of 0.6 m/s afterward in a different direction from before. What is the final speed of the other billiard ball?

I thought it was. 6 m/s because it is elastic, but it says I am wrong.

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  1. 8 May, 13:02
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    Use energy conservation to calculate the speed!

    Total kinetic energy before collision = total kinetic energy after the collision.
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