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A sphere of mass m moving with a uniform...

A sphere of mass m moving with a uniform velocity v hits another identical sphere at rest. If the coefficient of restitution is e, the ratio of the velocities of the two sphere after the collision is `(e-1)/(e+1)`.

A

0

B

`45^@`

C

`90^@`

D

`180^@`

Text Solution

Verified by Experts

The correct Answer is:
C
For perfectly elastic collision
`theta_1 +theta_2 = 90^@`
`implies theta =90^@`
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