Comment on The Physics of Colliding BallsComments−angry_moose1yAlso see the (somewhat legendary) "Perfectly centered break of a perfectly aligned pool ball rack" answer:https://mathoverflow.net/a/156407(updated link to original, not the repost)
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Also see the (somewhat legendary) "Perfectly centered break of a perfectly aligned pool ball rack" answer:
https://mathoverflow.net/a/156407
(updated link to original, not the repost)