A body of mass 2 kg moving at 3 m/s collides head-on and elastically with a stationary body of equal mass. After the collision:
Aboth move at 1.5 m/s
Bthe incoming body stops and the other moves at 3 m/s
Cboth stop
Dthey move with equal and opposite velocities
Answer & Solution
Correct answer: B. the incoming body stops and the other moves at 3 m/s
Equal masses, 1-D elastic collision: velocities are exchanged.
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