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A heavy ball moving with speed v collide...

A heavy ball moving with speed `v` collides with a tiny ball. The collision is elastic, then immediately after the impact, the second ball will move with a speed approximately equal to

A

`v`

B

`2v`

C

`v//3`

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
B
`m_(2) lt lt lt m_(1)` and
`vecv_(2) =((2m_(1))/(m_(1)+m_(2)))vec u_(1) +((m_(2)-m_(1))/(m_(1)+m_(2))) vec u_(2)`.
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