You know that a large displacement in a small amount of time means a large velocity and that velocity has units of distance divided by time, such as miles per hour or kilometers per hour.

Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt.

Learn how to find an object’s instantaneous speed or velocity in three ways - by using calculus, by looking at the slope of a given point on a graph of an object’s rate vs. time, or by using …

This equation can be derived by combining two equations for average velocity. Average velocity is defined as displacement divided by the time during which that displacement occurred:

How do we calculate the velocity of one object as seen by another object? In this video, we will intuitively figure out how to calculate relative velocities with some examples.

So as far as velocity is considered, there is no change in position. But when it comes to speed, speed says, "Well, I don't care about where your initial and final position is. All I care about is …

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The area under a velocity-time graph gives exact displacement because velocity × time equals change in position.

Sal solves a word problem to find average velocity and speed of an object in one-dimension.

Learn how to interpret the motion of an object represented on a velocity vs. time graph.