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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

In one dimensional collision between two identical particles A and B, where B is stationary and A has momentum p before impact. During impact B gives an impulse J to A. Then, coefficient of restitution between the two is

Answer: (A)

Solution

After impact A has momentum and B has momentum (equal masses m), so \dfrac{v_B - v_A}{u_A}\dfrac{J/m - (p-J)/m}{p/m}$ =

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Question ID VK-062396