\dot{a}
The dot accent \dot{a} is used in mathematics to denote the derivative of a function with respect to time, commonly used in physics and engineering to represent rates of change, such as velocity or acceleration.
Represents the first derivative of x with respect to time, often used to denote velocity.
\dot{x} = \frac{dx}{dt}
Angular velocity, where \theta is the angle and \omega is the angular speed.
\dot{\theta} = \omega
Rate of change of volume with respect to time.
\dot{V} = \frac{dV}{dt}