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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A man of mass 60 kg and a boy of mass 30 kg are standing together on a frictionless ice surface. If they push each other apart, the man moves away with a speed of 0.4 ms⁻¹ relative to the ice after 5 s. They will be away from each other at a distance of

Answer: (C)

Solution

By momentum conservation, boy's speed = (60×0.4)/30 = 0.8 ms⁻¹ (opposite

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Question ID VK-152884