Uniform circular motion is the motion of an object along a circular path at a constant speed. The speed of the object remains the same, but the direction of its velocity is constantly changing, resulting in a circular motion.
An object undergoes uniform circular motion due to a constant inward force acting towards the center of the circle, known as centripetal force. This force is necessary to keep the object moving along a circular path.
In uniform circular motion, the direction of the object's velocity is constantly changing, while its speed remains constant. In linear motion, both the direction and speed of the object's velocity can change.
In uniform circular motion, there is a constant acceleration towards the center of the circle, known as centripetal acceleration. This acceleration is perpendicular to the velocity of the object and is directly proportional to the object's speed and the radius of the circular path.
No, an object cannot undergo uniform circular motion without a centripetal force. Without this force, the object would continue in a straight line instead of following a circular path.