Two gliders collide on a frictionless air track that is aligned along the z axis. Glider A has an initial velocity of +6.0 m/s and a mass of mA = 0.20 kg. Glider B is initially at rest and has a mass mp. After they collide, A has a velocity of -1.0 m/s and B has a velocity of +2.0 m/s. Determine mp. Assume that It is an elastic collision

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