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Transcript
```9-7 Collisions in Two or Three Dimensions
Example 9-12: Billiard ball collision in 2-D.
Billiard ball A moving with speed vA = 3.0 m/s
in the +x direction strikes an equal-mass ball B
initially at rest. The two balls are observed to
move off at 45Â° to the x axis, ball A above the
x axis and ball B below. That is, Î¸Aâ = 45Â° and
Î¸Bâ = -45 Â°. What are the speeds of the two
balls after the collision?
```
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