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Choose the correct options A block of m...

Choose the correct options
A block of mass m moving at a speed of u collides with another block of mass 2 m at rest. The lighter block comes to rest after the collision. The coefficient of restitution is

A

`frac(4)(9)`

B

`frac(5)(9)`

C

`frac(1)(9)`

D

`frac(8)(9)`

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