Answer
The correct answer is:
(b) +y
Work Step by Step
The correct answer is:
(b) +y
In uniform circular motion, the acceleration vector always points toward the center of the circle. At point C, the acceleration vector points in the +x direction.
The acceleration vector continuously rotates counterclockwise through $180^{\circ}$ until it points in the -x direction at point A.
Therefore, the direction of the average acceleration is +y
