MHT CET 2022 Physics question
The masses 'm' and 'm' moving with velocities 'v' and 'v' in opposite directions collide elastically and after collision masses 'm' and 'm' move with velocity 'v' and 'v' respectively. The ratio is
Answer: (B)
Solution
Initially the speeds are and in opposite directions; after the collision moves with speed and with speed , i.e. the speeds are exchanged. In an elastic collision kinetic energy is conserved: $12 + 12 = 12 + 12
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