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Perfectly Elastic Collision

The speed of ...

Question

The speed of the masses immediately after the impact is $v_{0} / x$ . Find $x$ .

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Solution

Momentum of system will remain conserved.
Now by applying conservation of momentum principle, we get.
$m \times v_{o} + 2 m \times 0 = (m + 2 m) v v = v_{0} / 3$

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