• eturpin1
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 0.60 m/s afterward in a different direction from before. What is the final speed of the other billiard ball? I know the answer is 1.0 m/s, I just don't know how to work out the problem to show my work.
  • katieb
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  • IrishBoy123
hi @eturpin1 "elastically". compare KE before and after collision. the answer is not exactly 1, but it can be rounded to that.

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