An illustration of a circle with an arrowhead on the circle pointing counterclockwise. at a point near the top of the circle is a dot with 4 vectors from it. vector a is circular counterclockwise along the circle, vector c toward the center of the circle, a vector tangent to the circle and counterclockwise labeled b and a vector away from the center of the circle labeled d and a vector halfway between vectors b and d labeled c. aldis is swinging a ball tied to the end of a string over his head. suddenly, the string breaks and the ball flies away. arrow best represents the path the ball follows after the string breaks