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on an air track, a 2.25kg glider moving at 2.10m/s north has an elastic collision with...

on an air track, a 2.25kg glider moving at 2.10m/s north has an elastic collision with a glider moving at 1.50 m/s south. The second glider has 2.40 times the mass of the first glider. What is the final velocity, the velocity after the collision of the first glider in m/s? What is the velocity of the second glider in m/s?

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