"velocity" is referenced in the pages listed below.

Approximating distance travelled using a graph. Distance is divided into smaller and smaller segments. Part of introduction to inegral calculus. Interactive calculus applet.
You are given the velocity of the car at various times. How can you approximate the distance from the car's initial starting place to where it is at the end? A table method as an introduction to integral calculus. Interactive calculus applet.
Acceleration is the rate at which velocity (speed) is changing
We can define the instantanous velocity as a limit of an average velocity, as the time interval gets smaller and smaller. Interactive calculus applet.
Describes the problem of finding average velocity and speed as an intro to the use of calculus. Interactive calculus applet.