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NEET 2011 Physics question

PhysicsSystems of Particles and Rotational MotionNEET 2011

A mass moving horizontally (along the -axis) with velocity collides and sticks to mass of moving vertically upward (along the -axis) with velocity . The final velocity of the combination is :

Answer: (1)

Solution

The collision is perfectly inelastic (the masses stick together), and momentum is conserved along each axis separately. Initial momentum . Final momentum $=

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Question ID VK-090763