Final answer:
The correct option is: D) varies. The centripetal acceleration of a point on the equator varies depending on the speed and radius of curvature of the circular path. Therefore, the centripetal acceleration depends on the speed and radius of curvature of the circular path, which in this case is determined by the Earth's rotation.
Step-by-step explanation:
The centripetal acceleration of a point on the equator varies. Centripetal acceleration is the acceleration experienced by an object moving in a circular path. On the equator, the point is moving in a circle around the Earth's axis due to its rotation. Therefore, the centripetal acceleration depends on the speed and radius of curvature of the circular path, which in this case is determined by the Earth's rotation and the distance from the equator.
The correct option is: D) varies. The centripetal acceleration of a point on the equator varies depending on the speed and radius of curvature of the circular path. Therefore, the centripetal acceleration depends on the speed and radius of curvature of the circular path, which in this case is determined by the Earth's rotation and the distance from the equator.