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 
towards the third ball. Mark the correct statements. (Assume all collisions to be head-on and elastic)
.png)
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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 |
|
c) |
Finally, three balls remain stationary |
|
d) |
All of the above |
Question ID - 100222 | SaraNextGen Answer 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 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 
c)
Finally, three balls remain stationary
d)
All of the above
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 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 |
|
c) |
Finally, three balls remain stationary |
|
d) |
All of the above |
(d)
The situation after various collisions is as shown in fig.
.png)
After first collision, the momentum of 1 and 2 will be exchanged (property of elastic collision) and hence second ball starts to move towards 3 with velocity 
