
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 distance divided by …
Angular motion variables (video) | Khan Academy
So down here we'll define a similar quantity, but it's going to be the angular velocity, which is defined analogously to the regular velocity. If regular velocity is displacement per time, the angular velocity is …
Instantaneous speed & velocity (video) | Khan Academy
Speed is the time rate at which an object is moving along a path, and velocity is the rate and direction of an object's movement.
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 change your …
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.
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.
Instantaneous velocity and speed from graphs review
When people use the words speed or velocity, they usually mean instantaneous velocity or instantaneous speed. Average velocity and speed account for motion occurring over a time period, …
Angular velocity (article) - Khan Academy
So dividing the x component by some value, or perhaps constraining the angular velocity to a reasonable range, could really help. Here’s the entire update() method with these tweaks added.
Calculating average velocity or speed - 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, Δs) …
Displacement (article) | Kinematics | Khan Academy
For example, to describe the velocity of an object, we need to know both how fast the object is moving and in which direction it goes. For example, a box can have a velocity of 5 m/s in a southwestern …