Uniform velocity
Velocity Ve*loc"i*ty, n.; pl. {Velocities}. [L. velocitas, from velox, -ocis, swift, quick; perhaps akin to v?lare to fly (see {Volatile}): cf. F. v['e]locit['e].] [1913 Webster] 1. Quickness of motion; swiftness; speed; celerity; rapidity; as, the velocity of wind; the velocity of a planet or comet in its orbit or course; the velocity of a cannon ball; the velocity of light. [1913 Webster]

Note: In such phrases, velocity is more generally used than celerity. We apply celerity to animals; as, a horse or an ostrich runs with celerity; but bodies moving in the air or in ethereal space move with greater or less velocity, not celerity. This usage is arbitrary, and perhaps not universal. [1913 Webster]

2. (Mech.) Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under {Speed}. [1913 Webster]

{Angular velocity}. See under {Angular}.

{Initial velocity}, the velocity of a moving body at starting; especially, the velocity of a projectile as it leaves the mouth of a firearm from which it is discharged.

{Relative velocity}, the velocity with which a body approaches or recedes from another body, whether both are moving or only one.

{Uniform velocity}, velocity in which the same number of units of space are described in each successive unit of time.

{Variable velocity}, velocity in which the space described varies from instant, either increasing or decreasing; -- in the former case called accelerated velocity, in the latter, retarded velocity; the acceleration or retardation itself being also either uniform or variable.

{Virtual velocity}. See under {Virtual}. [1913 Webster]

Note: In variable velocity, the velocity, strictly, at any given instant, is the rate of motion at that instant, and is expressed by the units of space, which, if the velocity at that instant were continued uniform during a unit of time, would be described in the unit of time; thus, the velocity of a falling body at a given instant is the number of feet which, if the motion which the body has at that instant were continued uniformly for one second, it would pass through in the second. The scientific sense of velocity differs from the popular sense in being applied to all rates of motion, however slow, while the latter implies more or less rapidity or quickness of motion. [1913 Webster]

Syn: Swiftness; celerity; rapidity; fleetness; speed. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • uniform velocity — pastovusis greitis statusas T sritis automatika atitikmenys: angl. constant speed; uniform velocity vok. konstante Geschwindigkeit, f rus. постоянная скорость, f pranc. vitesse constante, f …   Automatikos terminų žodynas

  • uniform velocity — pastovusis greitis statusas T sritis Standartizacija ir metrologija apibrėžtis Greitis, kurio vertė nepriklauso nuo laiko. atitikmenys: angl. constant speed; uniform velocity vok. konstante Geschwindigkeit, f rus. постоянная скорость, f pranc.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • uniform velocity — pastovusis greitis statusas T sritis fizika atitikmenys: angl. constant speed; uniform velocity vok. konstante Geschwindigkeit, f rus. постоянная скорость, f pranc. vitesse constante, f …   Fizikos terminų žodynas

  • Velocity — Ve*loc i*ty, n.; pl. {Velocities}. [L. velocitas, from velox, ocis, swift, quick; perhaps akin to v?lare to fly (see {Volatile}): cf. F. v[ e]locit[ e].] [1913 Webster] 1. Quickness of motion; swiftness; speed; celerity; rapidity; as, the… …   The Collaborative International Dictionary of English

  • velocity — noun ADJECTIVE ▪ high ▪ low ▪ constant, uniform ▪ average, mean ▪ initial …   Collocations dictionary

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  • Uniform acceleration — Uniform, or constant, acceleration is a type of motion in which the velocity of an object changes equal amounts in equal time periods. An example of an object having uniform acceleration would be a ball rolling down a ramp. The object picks up… …   Wikipedia

  • Uniform circular motion — There are two types of circular motion: uniform circular motion and non uniform circular motion.Uniform circular motion describes motion in which an object moves with constant speed along a circular path. VelocityFigure 1 illustrates velocity and …   Wikipedia

  • uniform — {{Roman}}I.{{/Roman}} noun ADJECTIVE ▪ full ▪ smart (BrE) ▪ regulation ▪ the regulation uniform of tunic, hat and tie ▪ standard ( …   Collocations dictionary

  • uniform circular motion — Motion of a particle moving at a constant speed on a circle. Though the magnitude of the velocity of such an object may be constant, the object is constantly accelerating because its direction is constantly changing. At any given instant its… …   Universalium

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