Physics - Center of Mass Question with Solution | TestHub
PhysicsCenter of MassCollisionMedium2 minQB
PhysicsMediumsingle choice
Four identical particles A, B, C and D move with equal speed v, along the diagonal of a square towards the centroid O of the square, beginning at the vertices. After the collision at O, A and C retrace their path with speed 2v and B retraces its path with speed . Speed of the particle D after the collision is
Options:
Answer:
A
Solution:
Initial momentum of the system is zero, so the final momentum must also be zero.
A and C retrace with 2v and B with ; their vector sum is zero only when D also retraces its path with . Option (A).
Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Collision
⏱ 2mℹ️ Source: QB
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