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Two spheres A and B collide. If the momentum of A is doubled in the collision then,

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The initial momenta of A and B are equal

The initial momentum of A is greater than that of B

The initial momentum of B is double that of A

The total momentum of A and B is constant

answer is D.

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Detailed Solution

By linear momentum conservation,

According to the Law of Conservation of Linear Momentum, when no external force is applied to colliding bodies in a given system, the vector summation of specific bodies' linear momentum is unaffected by their non-to-one contact.

Momentum lost by B = Momentum gained by A

Hence the correct answer is the total momentum of A and B is constant.

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