Uniform Circular Motion

Uniform circular motion is a type of motion in which a body moves in a circular path at a constant speed but not at a constant velocity. In this motion, the magnitude of the velocity remains constant, but the direction of the velocity changes continuously.

Explanation:
In uniform circular motion, an object moves in a circular path with a constant speed. This means that the object covers equal distances in equal intervals of time. However, the velocity of the object is not constant because velocity is a vector quantity that includes both magnitude and direction.

Constant Speed:
In uniform circular motion, the speed of the object remains constant. This means that the object covers the same amount of distance in the same amount of time throughout its motion. The speed is calculated by dividing the total distance traveled by the total time taken.

Not Constant Velocity:
Velocity, on the other hand, is the rate at which an object changes its position. It includes both the magnitude of the speed and the direction of motion. In uniform circular motion, even though the speed remains constant, the direction of motion changes continuously as the object moves around the circular path. This means that the velocity of the object is not constant, as it is dependent on both the magnitude and direction.

Example:
A simple example of uniform circular motion is the motion of a car moving around a circular track at a constant speed. The car covers the same distance in the same amount of time as it completes each lap around the track. However, its velocity is not constant because the direction of motion is continuously changing.

Conclusion:
In conclusion, the motion in which a body has a constant speed but not constant velocity is called uniform circular motion. In this type of motion, the object moves in a circular path at a constant speed, but the direction of the velocity changes continuously.