Six identical balls are lined in a straight groove made on a horizontal frictionless surface. Two similar balls each moving with a velocity $v$ collide elastically with the row of $6\, balls$ from left. What will happen ?
Six identical balls are lined in a straight groove made on a horizontal frictionless surface. Two similar balls each moving with a velocity $v$ collide elastically with the row of $6\, balls$ from left. What will happen ?
- A
One ball from the right rolls out with a speed $2\,v$ and the remaining balls will remain at rest
- B
Two balls from the right rolls out with speed $v$ each and the remaining balls will remain stationary
- C
All the six balls in the row will roll out with speed $v/6$ each and the two colliding balls will come to rest
- D
The colliding balls will come to rest and no ball rolls out from right.
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