# A cue ball, moving with 7.0 Ns

Anonymous

Question description

A cue ball, moving with 7.0 Ns of momentum strikes the 9-ball at rest. The 9-ball moves off with 2.0 Ns in the original direction of the cue ball and 2.0 Ns perpendicular to that direction. What is the momentum of the cue ball after the collision?

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