Question

Six identical steel balls are
lined up in a straight
frictionless groove made
on a horizontal surface.
Two similar balls moving with speed v collide
elastically with the row of 6 balls from the left. Then
(A) all the 8 balls will move with a speed each
8
V
(B) all the 6 balls in the row will move with a speed
6
each and the two incident balls will come to rest
(C) two balls from the row will move with a speed v
other balls remaining at rest
(D) one ball from the row will move with a speed 20.
other balls remaining at rest​

Answer 1

Answer:

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