
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 …
Acceleration: At a glance (article) | Khan Academy
We can describe acceleration as the change in velocity over time, and we can use the shorthand equation a = Δ v / Δ t to represent this relationship where ‘a’ is the average acceleration, ‘v’ is …
Acceleration (video) | Motion | Khan Academy
Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per …
Circular motion (article) | Khan Academy
The net force that acts on an object in the radial direction is sometimes referred to as centripetal force. The acceleration that it causes, also in the radial direction, is called centripetal …
Acceleration (video) | Khan Academy
Acceleration is when an object's velocity is changing over time. Let's ignore the changing direction case and just focus on changing speed. An object can change speed either by speeding up or …
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Acceleration review (article) - Khan Academy
If the speed of an object remains the same but it changes direction, then the object is accelerating. People sometimes forget that acceleration and velocity aren’t always in the same …
Qu'est-ce que l'accélération ? (leçon) | Khan Academy
Comparée au déplacement et à la vitesse algébrique, l'accélération est un peu comme le dragon cracheur de feu des variables du mouvement. Elle peut être violente, elle peut faire peur, et on …
Connecting motion and forces (article) | Khan Academy
An object's acceleration —how quickly its velocity changes—depends on the strength of the net force exerted on it. A stronger net force causes a greater acceleration if the object's mass …
Newton's first and second laws (article) | Khan Academy
A system's acceleration always points in the same direction as the net force acting on the system. However, the system's acceleration and velocity vectors may point in the same direction, or in …