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Two identical balls moving in opposite d...

Two identical balls moving in opposite directions in free space collide head on. How they will move after the impact, is decided by coefficient of restitution. For different coeffecients of restiution, few possible outcomes are shown in the following figures. Which of the above outcomes are physically possible for a collision?

A

Only `1`

B

Only `2`

C

`1` and `2` but not `3`

D

`1` `2` and `3` all

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The correct Answer is:
B
Ans.(2) (Linear momentum should be conserved)
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