A cue ball with velocity $1\mathrm{.}7\frac{}{}$m/s moving to the right hits a $7$ ball and and eight ball simultaneously. All balls have mass $m=0\mathrm{.}16kg,$ but this is not needed to solve this problem. After the collision, the cue ball is at rest and the $7$ and $8$ balls each move off at $45$ relative to the original direction of the cue ball. What are the speeds of the $7$ and $8$ balls after the collision? Note that there are $2$ unknowns; use conservation of momentum in component form.

Answer rating: 100% (QA)

Solution Given data Mass of all balls m 016 kg Initial velocity of the cue ball vcue 17 ms Final vel... View the full answer