A moving block having mass `m` , collides with another stationary block having mass `4m`. The lighter block comes to rest after

A moving block having mass `m` , collides with another stationary block having mass `4m`. The lighter block comes to rest after collision. When the initial velocity of the block is `v`, then the value of coefficient of restitution `( e)` will be
A. 0.8
B. 0.25
C. 0.5
D. 0.4

A moving block having mass `m` , collides with another stationary block having mass `4m`. The lighter block comes to rest after collision. When the in

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