Six steel balls of identical size are lined up long a straight frictionless groove. Two similar balls moving with a speed V along the groove collide with this row on the extreme left hand then-

Options

A. all the balls will start moving to the right with speed 1/8 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.

Answer

C