A billiard ball is moving in the x-direction at 33.4 cm/s and strikes another billiard ball moving in the y-direction at 38.9 cm/s. As a result of the collision, the first ball moves at 50.6 cm/s, and the second ball stops. In what final direction does the first ball move?
a. in the x-direction
b. at an angle of 49.4° ccw from the x-direction
c. at an angle of 40.6° ccw from the x-direction
d. at an angle of 56.6° ccw from the x-direction
e. Such a collision cannot happen.
b
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