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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

Two putty balls of equal mass moving with equal velocity in mutually perpendicular directions, stick together after collision. If the balls were initially moving with a velocity of 45√2 ms⁻¹ each, the velocity of their combined mass after collision is [Haryana CEE 1996, BVP 2003]

Answer: (B)

Solution

Each ball has momentum m(45√2) along perpendicular directions; the resultant momentum magnitude is

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Question ID VK-154098