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  1. What is velocity? (article) | Khan Academy

    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 time, such as miles per hour or kilometers per hour.

  2. 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, Δs) …

  3. 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 kinematic …

  4. Vectors in 2D (article) | Vectors in plane | Khan Academy

    A bird is flying with a horizontal velocity v x = 9.3 m/s and a vertical velocity v y = 8.6 m/s. Calculate the magnitude and angle, relative to the horizontal, of the bird's total velocity. Enter your answers with …

  5. Velocity vs. time graphs (article) | Khan Academy

    Learn how to interpret the motion of an object represented on a velocity vs. time graph.

  6. 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 …

  7. What is velocity? (article) | Khan Academy

    Velocity or speed? Instantaneous or average? Keep building your physics vocabulary.

  8. Position vs. time graphs (article) | Khan Academy

    Because, velocity is a vector quantity and speed is a scalar quantity, also velocity is how fast a object displaces in a period of time and speed is how fast a object travels in a period of time.

  9. 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.

  10. 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: