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- 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 direction—or change both
- 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 second squared (m s^2) Acceleration is also a vector quantity, so it includes both magnitude and direction
- 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 velocity, and ‘t’ is time The Δ is a Greek symbol that means “change”
- 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 slowing down Both of these are acceleration Velocity and acceleration are vectors, so they have direction
- 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 stays the same
- Velocity vs. time graphs (article) | Khan Academy
The slope of a velocity graph is the acceleration Since the slope of the curve is decreasing and becoming less steep this means that the acceleration is also decreasing
- 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 direction When velocity and acceleration vectors point in opposite directions, the object is slowing down
- 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 (a → c)
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