Uniform Circular Motion of an Athlete on a Circular Track
The athlete will show uniform circular motion when running on a circular track due to the following reasons:

Constant Speed
- In uniform circular motion, the athlete moves along the circular path at a constant speed. This means that the athlete covers equal distances in equal intervals of time.

Constant Radius
- The athlete maintains a constant radius from the center of the circular track while running. This ensures that the athlete's distance from the center remains the same throughout the motion.

Constant Acceleration
- Although the athlete is constantly changing direction while running on the circular track, the magnitude of the athlete's acceleration remains constant. This is because the athlete's speed is constant, but the direction of the velocity changes.

Centripetal Force
- In order to maintain the circular motion, the athlete experiences a centripetal force towards the center of the circle. This force is provided by the friction between the athlete's shoes and the track surface.

Balance of Forces
- The athlete experiences a balance of forces, with the centripetal force directed towards the center of the circle and the athlete's inertia trying to move the athlete in a straight line. This balance of forces allows the athlete to maintain the circular motion.
In conclusion, the athlete will exhibit uniform circular motion while running on a circular track when the speed is constant, the radius is constant, and the athlete experiences a balance of forces to maintain the circular path.

When it covers equal distance in equal interval of time