Here's why:

* Speed is the rate at which an object moves, typically measured in units like meters per second (m/s) or kilometers per hour (km/h).

* Instantaneous speed refers to the speed of an object at a specific moment in time. This is different from average speed, which is the total distance traveled divided by the total time taken.

Think of it this way: if you're driving a car, your speedometer shows your instantaneous speed at any given moment.