Collision of Billiard Balls#

In a game of billards, a red billiard ball is traveling in the positive x-direction with speed \(v\) and the cue ball is traveling in the negative x-direction with speed \(3v\). The two balls collide head on and the collision is elastic. The two balls have the same mass.

Part 1#

Which statement concerning the velocities of the balls after the collision is true?

Answer Section#

  • red ball: \(-v\), cue ball: \(3v\)

  • red ball: \(v\); cue ball: \(2v\)

  • red ball: \(-3v\); cue ball: \(v\)

  • red ball: \(v\); cue ball: \(3v\)

  • More information is needed.

Attribution#

Problem is licensed under the CC-BY-NC-SA 4.0 license.
The Creative Commons 4.0 license requiring attribution-BY, non-commercial-NC, and share-alike-SA license.