Angular acceleration

Do you know how when you spin a toy top or a fidget spinner really fast, it keeps turning and turning? Well, the speed at which it is turning is called the angular velocity.

Now, imagine you want to make your toy top spin faster. You can do this by applying more force with your hand. But when you do this, the top will start to spin faster and faster, which means the change in its angular velocity is increasing. This change in how fast the top is spinning is called angular acceleration.

Just like with acceleration when you're driving a car, angular acceleration measures how much faster an object is rotating over time. So, if you keep applying force to the top, its angular acceleration will keep increasing, and it will continue to spin faster and faster.