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NEET 2022 Physics question

PhysicsSystems of Particles and Rotational MotionNEET 2022

A shell of mass is at rest initially. It explodes into three fragments having mass in the ratio 2 : 2 : 1. If the fragments having equal mass fly off along mutually perpendicular directions with speed , the speed of the third (lighter) fragment is :

Answer: (D)

Solution

Momenta of the two heavy fragments are each at right angles,

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Question ID VK-014729