Choose which of the following remains constant for a body moving in a horizontal circular path at a constant speed.

A moving object in uniform circular motion follows a circular path at a constant speed.

A circle is assumed to be a polygon with an infinite number of sides, each of which approximates a point.

As a result, the object moving in a circular path changes direction at each point.

Because the direction changes while the speed remains constant, velocity varies.

Kinetic energy is the amount of energy that a moving object possesses.

Given that the object is moving in a uniform circular path. As a result, the object is moving in a circular motion.

The velocity changes in a uniform circular motion as the object's direction changes at each point.

The rate of change of velocity is defined as acceleration. Because velocity changes at every instant, so do acceleration.

The magnitude of velocity is uniform in a uniform circular motion, but the direction changes at each point. Kinetic energy is proportional to the magnitude of a moving object's velocity.

As a result, kinetic energy remains constant in a uniform circular motion.