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, thenA. 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 centre of mass of the system will have a final speed vD. The centre of mass of the system will have a final speed `(v)/(n)`.

A set of n identical cubical blocks lies at rest parallel to each othe

1.	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, thenA. 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 centre of mass of the system will have a final speed vD. The centre of mass of the system will have a final speed `(v)/(n)`.
Answer» Correct Answer - B::D

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