ABSTRACT
This chapter describes almost the same physical properties, characteristics regarding to rotational motion. It also describes other physical properties such as inertia, and different variables including tangential, centrifugal, and centripetal accelerations related to angular motion. The distance in angular rotation in fact represents a distance separation between two objects observed from a location different from either of these two objects. The measurement of the distance/displacement in two-dimensional plane can be done to the positive direction, which is counterclockwise, or negative direction, which is clockwise. Any object/mass that is going through a uniform circular motion with a constant speed will be accelerated by the force driving it because a rotary motion is related to acceleration, velocity, and direction. Since the velocity is a vector that has both magnitude and direction, a change in either the magnitude or the direction constitutes a change in the velocity.
