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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A particle of mass m moving in the x-direction with speed 2v is hit by another particle of mass 2m moving in the y-direction with speed v. If the collision is perfectly inelastic, the percentage loss in the energy during the collision is close to

Answer: (C)

Solution

Momentum: , , so and final KE ; initial KE \tfracm(2v)^2$ +

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Question ID VK-062376