Explanation:

Uniform circular motion is defined as the motion of an object moving in a circular path at a constant speed. In this type of motion, the direction of velocity continuously changes, but the magnitude of velocity remains constant.

Linear Velocity:

Linear velocity is defined as the rate of change of displacement of an object in a particular direction. In uniform circular motion, the direction of velocity continuously changes, but the magnitude of velocity remains constant. Therefore, the linear velocity in uniform circular motion changes continuously.

Centripetal Force:

Centripetal force is defined as the force that causes an object to move in a circular path. It acts perpendicular to the direction of motion and towards the center of the circular path. In uniform circular motion, the centripetal force remains constant as long as the speed of the object remains constant.

Acceleration:

Acceleration is defined as the rate of change of velocity of an object. In uniform circular motion, the direction of velocity continuously changes, which means that the object is continuously accelerating. The acceleration is always directed towards the center of the circular path and is given by the formula a = v2/r, where v is the linear velocity and r is the radius of the circular path.

Speed:

Speed is defined as the rate of change of distance traveled by an object in a particular time. In uniform circular motion, the speed remains constant as long as the radius of the circular path and the centripetal force remain constant.

Conclusion:

In conclusion, the factor that remains constant in uniform circular motion is the centripetal force. The linear velocity changes continuously, the acceleration is directed towards the center of the circular path and changes continuously, and the speed remains constant only if the radius of the circular path and the centripetal force remain constant.

Uniform circular motion is called uniform only because it's speed remains uniform or constant. The only thing that changes is the direction of motion. So in uniform circular motion the velocity keeps changing but the speed remains constant.