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Two particles A and B of equal size but ...

Two particles A and B of equal size but of masses `m kg` and `2m kg` are moving directly towards each other with speeds `21 m//s` and `4 m//s` respectively. After collision, A moves with a speed of `1 m//s` in the original direction. Then:

A

The velocity of B after collisionis 5 m/s opposite its direction of mation before collision.

B

The coefficient of restitution is 0.2

C

The loss of kinetic energy due to collision is 200 J

D

The impulse of the force between the two balls is 40 N-s

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