Two billiard balls having the same mass and speed roll toward each other. What is their combined momentum after they meet?

Name: Two billiard balls having the same mass and speed roll toward each other. What is their combined momentum after they meet?
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Question

Quizplus · Accepted Answer

Since momentum is a vector quantity and the balls have equal mass and speed but are moving in opposite directions, their momentums cancel each other out, resulting in a combined momentum of zero after they meet.

Two Billiard Balls Having the Same Mass and Speed Roll