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Two identical ball bearings in contact w...

Two identical ball bearings in contact with each other and resting on a frictionless table are hit heat-on by another ball bearing of the same mass moving initially with a speed `V` as shown in figure.

If the collision is elastic, which of the following (figure) is a possible result after collision ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
B
When two bodies of equal masses collide elastically, their velocities are interchanged.
When ball 1 collides with ball – 2, then velocity of ball –
1, `v_1` becomes zero and velocity of ball – 2, `v_2` becomes v , i.e.,
similarly `v_1 = 0 implies v_2 = v`
when ball 2 collides with ball 3 then `v_2 = 0 , v_3 = v`
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