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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A smooth sphere of mass M, moving with velocity u, directly collides elastically with another sphere of mass m at rest. After collision their final velocities are V and v respectively. The value of v is

Answer: (C)

Solution

v₂ = 2m₁u₁/(m₁+m₂) = 2Mu/(M+m) = 2u/(1 + m/M).

Question ID VK-154027