This document discusses circular motion and its two types: uniform and non-uniform. Uniform circular motion describes an object moving in a circle at a constant speed, with the velocity vector always tangent to the circular path. An example given is keeping a car's speed steady around a curve. Non-uniform circular motion involves a changing speed, as shown by a changing speedometer reading during a turn. For an object to undergo circular motion, a force must be exerted towards the center of the circle.