A Billiard Ball Is Moving in the X-Direction at 33

Multiple Choice

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.