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A block of mass m moving at a velocity v collides with another block of mass 2m

A block of mass m moving at a velocity v collides with another block of mass 2m at rest.The lighter block comes to rest after collision.Find the coefficient of restitution.

Options

(a) 1/2
(b) 1
(c) 1/3
(d) 1/4

Correct Answer:

1/2

Explanation:

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