The velocity of an object at a specific point in time.

Here's a breakdown:

* Velocity: Velocity is a vector quantity, meaning it has both magnitude (speed) and direction.

* Instantaneous: This means "at a particular moment".

* Therefore, instantaneous velocity refers to the velocity of an object at a single, specific moment in time.

Key points:

* Instantaneous velocity is a derivative of the object's position function.

* It can be found by calculating the limit of the average velocity as the time interval approaches zero.

* In simpler terms, it's the speed and direction of an object at a given instant.

Example:

If a car is moving at 60 km/h at a certain instant, its instantaneous velocity at that moment is 60 km/h. If the car then accelerates to 80 km/h, its instantaneous velocity changes accordingly.