Angular acceleration is the rate at which the angular velocity of an object changes over time. It is a vector quantity, meaning that it has both magnitude and direction. The direction of angular acceleration is given by the right-hand rule. If you point your right thumb in the direction of the angular velocity vector, and then curl your fingers, the direction of your fingers will give you the direction of the angular acceleration vector.
Angular acceleration is an important quantity in many areas of physics, including mechanics, engineering, and astronomy. It is used to describe the motion of rotating objects, such as wheels, gears, and planets. Angular acceleration can also be used to calculate the torque acting on an object.
