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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A man of mass kg jumps from an aeroplane. He sees the hard ground below him and a lake at a distance m from the point directly below him. He immediately puts off his jacket (mass kg) and throws it in a direction directly away from the lake. If he just fails to strike the ground, find the distance (in m) he should walk now to pick his jacket. (Neglect air resistance and take the velocity of the man at the time of the jump with respect to earth as zero.)

Answer: 3

Solution

Let the jacket leave with horizontal speed (away from the lake) and the man recoil with speed (toward the lake), both falling for the same time . "Just fails to strike the ground" means the

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Question ID VK-158840