Question

Two identical spheres A and B are moving with same velocity and collides with similar spheres C and D, then after collision:

• A. D will move with greater speed
• B. C and D will move with same velocity v
• C. C will stop and D will move with velocity v
• D. all spheres A, B, C & D will move with velocity $v/2$

Answer 1

The correct option is B C and D will move with same velocity v

First B collides with C. B stops and C moves.

C hits D and stops while D moves.

at the same time, A hits B and stops, pushing B.

Now B hits the now at rest C and comes to rest and C starts moving.

Thus, in the end C,D move to the right and A,B stay at rest.