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A sphere of mass 25 Kg is moving at a speed of 1.5 m/s undergoes collision with another sphere of mass 50 Kg moving at 3m/s in the same direction, find the velocity of 50 Kg mass in m/s after collision when the collision is elastic.

A sphere of mass 25 Kg is moving at a speed of 1.5 m/s undergoes collision with another sphere of mass 50 Kg moving at 3m/s in the same direction, find the velocity of 50 Kg mass in m/s after collision when the collision is elastic. Correct Answer 2.00

Velocity during elastic collision is given by m1u1 + m2u2/(m1+ m2) = v substituting the values we get V = 2.5 m/s v1 = 2V – u1 v1 = 2m/s

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