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Two identical balls A and B lie on a smo...

Two identical balls `A` and `B` lie on a smooth horizontal surface, which gradually merges into a curve to a height `3.2 m`. Ball `A` is given a velocity of `10 m//s`, to collide head-on with ball `B`, which then takes up the curved path. What is the minimum coefficient of restitution, `e`, for the collision between `A` and `B` in order that ball `B` reaches the highest point `C` of the curve.

A

`(1)/(2)`

B

`(3)/(5)`

C

`(1)/(4)`

D

`(3)/(4)`

Text Solution

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The correct Answer is:
B
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