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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A body of mass m is at rest. Another body of the same mass moving with velocity V makes a head-on elastic collision with the first body. After collision the first body starts to move with velocity [Orissa PMT 2004]

Answer: (A)

Solution

In an elastic collision between equal masses, with one initially at rest, the velocities simply

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Question ID VK-154044