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  4. Two billiard balls undergo a head-on collision. Ball 1 is twice as heavy as ball 2 . Initially, the ball 1 moves with a speed v towards the ball 2 which is at rest. Immediately after the collision, ball 1 travels at a speed of v/3 in the same direction. What type of collision has occurred?

Q. Two billiard balls undergo a head-on collision. Ball is twice as heavy as ball . Initially, the ball moves with a speed towards the ball which is at rest. Immediately after the collision, ball travels at a speed of in the same direction. What type of collision has occurred?

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Solution:





From conservation of linear momentum



e = 1

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