JEE Main Physics question
A ball of mass 10 kg is moving with a velocity of 10 m/s. It strikes another ball of mass 5 kg which is moving in the same direction with a velocity of 4 m/s. If the collision is elastic, their velocities after collision will be, respectively [Bihar CMEET 1995]
Answer: (A)
Solution
v₁ = [(m₁−m₂)/(m₁+m₂)]u₁ + [2m₂/(m₁+m₂)]u₂ and v₂ = [2m₁/(m₁+m₂)]u₁ + [(m₂−m₁)/(m₁+m₂)]u₂. Substituting m₁=10, m₂=5,
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