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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A mass m moves with a velocity v and collides inelastically with another identical mass. After collision the 1st mass moves with velocity v/√3 in a direction perpendicular to the initial direction of motion. Find the speed of the second mass after collision. [AIEEE 2005]

Answer: (C)

Solution

Momentum conservation: along x, m(0) + = mv ⟹ = v; along y, m(v/√3) +

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Question ID VK-153675