billiards

Classical Mechanics Level 1

When a billiard player strikes the cue ball at the center horizontally, causing it to skid and make a head-on collision with an identical ball at rest, what will happen?

Assume that the collision is perfectly elastic and friction is absent.

The cue ball continues to move with the second ball in the same direction with reduced speed The cue ball bounces off and begins moving in the opposite direction but the second one doesn't move The cue ball bounces off and the two balls begin moving in the opposite directions The cue ball stops and the second ball begins moving with the cue ball’s initial speed

A Former Brilliant Member by A Former Brilliant Member

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1 solution

Alex Wang
Oct 10, 2017

This looks like a copy of one of my problems. Did you copy it? (I'm not trying to make a loaded question)

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I have a question.Though I am not sure and a bit stupid, won't the force applied by the collision of cue ball with the other ball cause a reaction from the other ball resulting in force being applied on the cue ball and the cue ball moving the opposite direction?

The VG - 3 years, 3 months ago

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A perfectly elastic collision does not behave like that, all the energy is absorbed.

alex wang - 3 years, 2 months ago

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