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  • Khan Academy
    Oops Something went wrong Please try again Uh oh, it looks like we ran into an error You need to refresh If this problem persists, tell us
  • Acceleration (video) | Motion | Khan Academy
    Acceleration is change in velocity If an object's speed and or direction is changing, it is accelerating If an object is speeding up, its velocity and acceleration are in the same direction If an object is slowing down, its velocity and acceleration are in opposite directions If neither an object's speed or direction are changing, it's moving at constant velocity and its acceleration is zero
  • Acceleration (video) | Kinematics (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
  • Learn and try: Connecting motion and forces (article . . . - Khan Academy
    Use a PhET simulation to investigate the effects of balanced and unbalanced forces on an object's motion Explore how an object's acceleration is affected by the net force acting on it and its mass
  • What is acceleration? (article) | Khan Academy
    What does acceleration mean? Compared to displacement and velocity, acceleration is like the angry, fire-breathing dragon of motion variables It can be violent; some people are scared of it; and if it's big, it forces you to take notice
  • Acceleration (video) - Khan Academy
    Acceleration is the rate of change of velocity (a = Δv Δt) The unit for acceleration is m s s, or m s^2 Acceleration is a vector with magnitude and direction If velocity and acceleration point the same direction, the object is speeding up If velocity and acceleration point opposite directions, the object is slowing down Changing direction is also a form of acceleration
  • Angular motion variables (video) | Khan Academy
    David explains the meaning of angular displacement, angular velocity, and angular acceleration
  • 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”
  • Gravitational potential energy (article) | Khan Academy
    If g is the magnitude of the gravitational acceleration, we can find the work done by the force on the weight by multiplying the magnitude of the force of gravity, F g , times the vertical distance, h , it has moved through This assumes the gravitational acceleration is constant over the height h
  • Acceleration vs. time graphs (video) | Khan Academy
    David explains how to read an acceleration vs time graph He then shows how the area under the curve gives the change in velocity and does a few examples





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