In a head on elastic collision of a very heavy body moving at $ v $ with a light body at rest, velocity of heavy body after collision is

Question

In a head on elastic collision of a very heavy body moving at $ v $ with a light body at rest, velocity of heavy body after collision is, v, $ 2 v $, Zero, $ \frac{v}{2} $

MARKS App · Accepted Answer

In a perfectly elastic collision the relative velocity remains unchanged in magnitude but reserved in direction. Therefore , velocity of heavy body after collision is v.

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