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A set of n identical cubical blocks lies...

A set of n identical cubical blocks lies at rest parallel to each other along a line on a smooth horizontal surface. The separation between the near surfaces of any two adjacent blocks is L . The block at one end is given a speed v towards the next one at time 0 t . All collisions are completely inelastic, then

A

The last block starts moving at `t=((n+1)L)/(v)`

B

The last block starts moving at `t=(n(n-1)L)/(2v)`

C

The center of mass of the system will have the final speed v

D

The center of mass of the system will have the final speed `(v)/(n)`

Text Solution

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The correct Answer is:
D
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ANURAG MISHRA-IMPULSE AND MOMENTUM-Level 1
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