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Five balls are placed one after the othe...

Five balls are placed one after the other along a straight line as shown in the figure. Initially, all the balls are at rest. Then the second ball has been projected with speed `v_(0)` towards the third ball. Mark the correct statements, (Assume all collisions to be head-on and elastic.)

A

Total number of collisions in the process is 5

B

Velocity of separation between the first and fifth ball after the last possible collision is `v_0`

C

Finally, three balls remain stationary.

D

All of the above

Text Solution

Verified by Experts

The correct Answer is:
D
The situation after various collision is as shown in figure

After first collision, the momenta of 1 and 2 will be exchanged (property of elastic collision) and hence second ball starts to move towards 3 with velocity `v_(0)`.
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