It is the speed or velocity at a particular instant.
Instantaneous speed is the magnitude of the velocity. Velocity also states the [direction] of the speed.
Instantaneous.
No. Speed can remain constant when velocity changes, but velocity can't remain constant when speed changes.
It shows instantaneous speed.
Speed, instantaneous or not, is a term used for how fast an object travels. Velocity, instantaneous or not, is a term used for how fast an object travels in a particular direction.
The rate of change in position at a given point in time is instantaneous speed, instantaneous velocity.
velocity
velocity
velocity is just a general term for speed (it could be average velocity or instantaneous velocity). Instantaneous velocity/speed (same thing) is the speed at that second. If you are familiar with calculus, it is the derivative of the position graph. Whereas average velocity is how fast the object is going in, for example, 1 hour, it is the speed that is maintained the whole hour (or the average) Instantaneous would be that at the second, at for example t=1.425, the speed is 24m/h . something along those lines
velocity
That is called the instantaneous speed.
For the instantaneous value of average velocity, average speed and average velocity are equal.