This option is incorrect. In uniform circular motion, the velocity and acceleration are not antiparallel (opposite in direction). They have different directions.
This option is also incorrect. Velocity and acceleration are not parallel in uniform circular motion. They have different directions.
This option is correct. In uniform circular motion, the velocity and acceleration vectors are always perpendicular to each other. The velocity is tangential to the circular path, while the acceleration (centripetal acceleration) points toward the center of the circle.
This option is incorrect. There is acceleration in uniform circular motion, specifically centripetal acceleration, which keeps the object moving in a circular path.
The correct option is C, "Velocity and acceleration are perpendicular." This option is correct. In uniform circular motion, the velocity and acceleration vectors are always perpendicular to each other. The velocity is tangential to the circular path, while the acceleration (centripetal acceleration) points toward the center of the circle.