Physics - Center of Mass Question with Solution | TestHub

PhysicsCenter of MassMomentum conservationMedium3 minQB
PhysicsMediumsingle choice
Passage / Comprehension

Two bodies have undergone an elastic one-dimensional collision along x-axis. Figure is a graph of position versus time for these bodies and for their center of mass.

The mass of the body that was moving faster before the collision is that of the other body.

Options:

Answer:
C
Solution:

Bodies are lines 1 (at rest) and 3 (moving) before; lines 4 (moving) and 6 (at rest) after. The moving body stops and the stationary one takes its velocity: this velocity exchange happens only for equal masses. Answer: (C) equal to

Stream:JEESubject:PhysicsTopic:Center of MassSubtopic:Momentum conservation
⏱ 3mℹ️ Source: QB

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