Six steel balls of identical size are lined up along a straight frictionless groove. Two similar balls moving with a speed $V$ along the groove collide with this row on the extreme left end. Then:

  • A
    all the balls will start moving to the right with speed $V/8$ each
  • B
    all the six balls initially at rest will move on with speed $V/6$ each and two identical balls will come to rest
  • C
    two balls from the extreme right end will move on with speed $V$ each and the remaining balls will remain at rest
  • D
    one ball from the right end will move on with speed $2V$,the remaining balls will be at rest

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