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Three identical blocks A, B and C are pl...

Three identical blocks A, B and C are placed on horizontal frictionless surface. The blocks B and C are at rest. But A is approaching towards B with a speed of `10 ms^(-1)`

The coefficient of restitution for all collision is 0.5. The speed of the block C just after collision is

A

`5.6ms^(-1)`

B

`6ms^(-1)`

C

`8ms^(-1)`

D

`10ms^(-1)`

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • Three identical spherical balls A, B and C are placed on a table as shown in the figure along a straight line. B and Care at rest initially. The ball A hits B head on with a speed of 10 ms^(-1) . Then after all collisions (assumed to be elastic) A and B are brought to rest and C takes off with a velocity of

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    `7.5 ms^(-1)`
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  • A sphere A impinges directly on an identical sphere B at rest. If coefficient of restitution is e , the ratio of velocities of A and B after collision is

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