
What is velocity? (article) | Khan Academy
Velocity or speed? Instantaneous or average? Keep building your physics vocabulary.
What is velocity? (article) - Khan Academy
Your notion of velocity is probably similar to its scientific definition. You know that a large displacement in a small amount of time means a large velocity and that velocity has units of …
What is acceleration? (article) | Khan Academy
Acceleration is the name we give to any process where the velocity changes. Since velocity is a speed and a direction, there are only two ways for you to accelerate: change your speed or …
Instantaneous speed and velocity (video) | Khan Academy
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 …
The kinematic equations (article) | Khan Academy
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:
Review of 1D motion (video) | Khan Academy
By definition. velocity is rate of change of displacement. Acceleration is rate of change of velocity.
Drift velocity - formula & derivation (video) | Khan Academy
Let's derive the drift velocity formula (v = eEt/m), in terms of relaxation time. Drift velocity is the average velocity with which, the electrons drift in the opposite direction of the field.
Average velocity and speed review (article) | Khan Academy
Displacement is the theoretical amount traveled. Velocity is the rate in which the object changes its position. First find the displacement, then divide it by the time to get your velocity.
Calculating average velocity or speed (video) | Khan Academy
Although speed and velocity are often words used interchangeably, in physics, they are distinct concepts. Velocity (v) is a vector quantity that measures displacement (or change in position, …
Position, velocity, and speed (video) | Khan Academy
You can think of speed as velocity without the direction. They both have the same units, meters per second as a standard unit, or in a more day-to-day life, unit would be miles per hour.