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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

If a ball is dropped from rest, it bounces from the floor repeatedly. The coefficient of restitution is 0.5 and the speed just before the first bounce is 5 ms⁻¹. The total time taken by the ball to come to rest is

Answer: (A)

Solution

Using the standard result for a ball bouncing to rest, , with , , :

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Question ID VK-158659