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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A bomb at rest explodes into 3 parts of the same mass. The momenta of 2 parts are −2pî and pĵ. The momentum of the third part will have a magnitude of

Answer: (C)

Solution

Momentum conservation (initially zero): **p₃** = −(−2pî + pĵ) = (2pî − pĵ). |**p₃**| = √(4p²+p²) = p√5.

Question ID VK-153679