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The coefficient of restitution ( e) for ...

The coefficient of restitution `( e)` for a perfectly elastic collision is

A

`-1`

B

`0`

C

`infty`

D

`1`

Text Solution

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The correct Answer is:
D
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What is coefficient of restitution for a perfectly inelastic collision ?

A collision in which there is absolutely no loss of K.E. is called an elastic collision. In such a collision, the linear momentum , total energy and kinetic energy, all are conserved.The coefficient of restitution // resilience of perfectly elastic collisions is unity. Read the above passage and answer the following questions : (i) When two bodies of equal masses undergo perfectly elastic collision in one dimension, what happens to their velocities ? (ii) How is this fact applied in a nuclear reactor ?

Knowledge Check

  • For perfectly elastic collision

    A
    `v_(2)-v_(1)=u_(2)-u_(1)`
    B
    `v_(1)-v_(2)=u_(1)-u_(2)`
    C
    `v_(2)-v_(1)=u_(1)-u_(2)`
    D
    `v_(2)-v_(1)=(u_(1)+u_(2))/(2)`

  • The cofficient of restitution e for a perfectly elastic collision is

    A
    1
    B
    zero
    C
    infinite
    D
    -1

  • The coefficient of restitution e for a perfectly inelastic collision is

    A
    1
    B
    0
    C
    `oo`
    D
    `-1`

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    Show that coefficient of restitution for one dimensional elastic collision is equal to one?

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    The coefficient of restitution for a perfectly elastic collision is

    In elastic collision

    In perfectly inelastic collision

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