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.)

Total number of collisions in the process is 5

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

Finally, three balls remain stationary.

All of the above

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The correct Answer is:

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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