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velocity (s) (noun)
, velocities (pl)
1. The speed at which something moves, happens, or is done: Because the two cars were both driving in exactly the same direction at 60 miles per hour, they were both traveling at the same velocity
2. A measure of the rate of change in position of something with respect to time, involving speed and direction: A rain drop’s size, and not its density, determines the velocity
of its fall.
3. Etymology: from Latin velocitatem
; from velocitas
, from velox, veloc-
, "swift, speedy, rapid, quick".
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Word Entries containing the term:
The rate or speed of motion of an electron.
1. The rate at which charged particles move in a solution under the influence of an electric field.
2. The velocity of a charged particle during electrophoresis.
It is normally proportional to an electric field of strength.
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Speed in a certain direction or the rate of change of the position of an object.
For motion in one dimension, such as along the number line, velocity is a scalar and for motion in two dimensions or through three-dimensional space, velocity is a vector.
The rate at which a moving car changes its position when traveling in a given direction.
If a car goes around a corner without changing speed, its velocity changes because it changes direction.
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The minimum velocity with which an object must be projected for it to escape from the gravitational pull of a planetary body.
To effectively escape the gravitational field of a star, planet, or other celestial body, a projectile must have a minimal velocity which has been worked out in a special formula.