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2 billion balls each of mass 450 g rolled toward each other head on one with speed of 4.3 m/s and the other with a

2 billion balls each of mass 450 g rolled toward each other head on one with speed of 4.3 m/s and the other with a speed of 6.5 m/s after the collision the one that was traveling faster reverses its direction and travels at 3.8 m/s. What is the velocity of the other ball.

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