question_answer

Six identical balls are lined up along a straight frictionless groove. Two similar balls moving with speed v along the groove collide with this row on extreme left side end. Then

A)  One ball from the right end will move on with speed \[\varepsilon \upsilon \], all the other remains at rest

B)  Two balls from the extreme right will move on the speed u each and the remaining balls will be at rest.  

C)  All the balls will start moving to the right with.

D)  All the six balls originally at rest will moves on with speed \[\frac{\upsilon }{6}\] each and the two incident ball will come to rest.