# velocity

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Related to velocities: seismic velocities

## ve·loc·i·ty

(və-lŏs′ĭ-tē)
n. pl. ve·loc·i·ties
1. Rapidity or speed of motion; swiftness.
2. Physics A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
3.
a. The rate of speed of action or occurrence.
b. The rate at which money changes hands in an economy.

[Middle English velocite, from Old French, from Latin vēlōcitās, from vēlōx, vēlōc-, fast; see weg- in Indo-European roots.]

## velocity

(vɪˈlɒsɪtɪ)
n, pl -ties
1. speed of motion, action, or operation; rapidity; swiftness
2. (Units) physics a measure of the rate of motion of a body expressed as the rate of change of its position in a particular direction with time. It is measured in metres per second, miles per hour, etc. Symbol: u, v or w
3. physics (not in technical usage) another word for speed3
[C16: from Latin vēlōcitās, from vēlōx swift; related to volāre to fly]

## ve•loc•i•ty

(vəˈlɒs ɪ ti)

n., pl. -ties.
1. rapidity of motion, action, or operation; swiftness; speed.
2. Mech. the time rate of change of position of a body in a specified direction.
[1540–50; < Latin vēlōcitās speed. See velocipede, -ty2]
syn: See speed.

## ve·loc·i·ty

(və-lŏs′ĭ-tē)
The rate at which an object moves in a specified direction.
Usage We normally think of velocity as the speed at which an object is traveling. But in physics, velocity and speed are not the same. Like speed, velocity refers to the rate at which an object is moving—the distance per unit of time. But velocity in physics also includes the direction in which the object is moving, whereas direction has no bearing on an object's speed. For example, if two cars were driving at a rate of 50 miles per hour, and both headed due north, you could rightly say that they were both traveling at the same speed and at the same velocity. But if one of the cars were to turn west at a certain point, continuing at the same rate of 50 miles per hour, you could only say that they were traveling at the same speed, not at the same velocity. Similarly, traveling around a curve, a car may maintain the same speed throughout, but its velocity will be constantly changing. This change in velocity over time is called acceleration.

## velocity

Rate of motion in a particular direction.
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Noun 1 velocity - distance travelled per unit time  speedangular velocity - (physics) the rate of change of the angular position of a rotating body; usually expressed in radians per second or radians per minuteairspeed - the speed of an aircraft relative to the air in which it is flyingescape velocity - the minimum velocity needed to escape a gravitational fieldgroundspeed - the speed of an aircraft relative to the groundhypervelocity - excessive velocity; "the meteorites struck the earth with hypervelocity impacts"muzzle velocity - the velocity of a projectile as it leaves the muzzle of a gunpeculiar velocity - velocity with respect to the local standard of restradial velocity - velocity along the line of sight toward or away from the observerlight speed, speed of light, c - the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per secondsteerageway - (nautical) the minimum rate of motion needed for a vessel to be maneuveredterminal velocity - the constant maximum velocity reached by a body falling through the atmosphere under the attraction of gravityrate - a magnitude or frequency relative to a time unit; "they traveled at a rate of 55 miles per hour"; "the rate of change was faster than expected"

## velocity

noun the velocity at which the planets orbit

## velocity

noun
Rate of motion or performance:
Informal: clip.
Translations
سُرْعَه
rychlost
hastighedvelocitet
nopeusvauhti
hraîi
ātrums
farthastighet

[vɪˈlɒsɪtɪ] N

[vɪˈlɒsəti] n

## velocity

[vɪˈlɒsɪtɪ] nvelocità f inv

## velocity

(vəˈlosəti) noun
speed, especially in a given direction.
References in classic literature ?
So you see, gentlemen, that a balloon can resist such velocities."
In such cleanrooms, unidirectional flows are generally maintained by supplying air at higher velocities (90 fpm, 0.46 m/s or higher) through High-Efficiency Particulate Air (HEPA) filters covering the entire ceiling and extracting it through a raised perforated floor to create a "single pass" flow path.
A sphere with the nominal diameter of a nonspherical grain has the same weight, so that the difference between their settling velocities must be due to shape effects alone [11].
Different fume hood models will operate at different published face velocities. Since not all laboratories need the most advanced fume hoods, many manufacturers offer a range from which to choose.
Velocities for 11m-6m section (V1), 6m-1m section (V2), total 10m (V10) and difference between V2 and V1 (V2-V1) were calculated for each jump.
investigated the differences between 29 collegiate and professional pitchers who threw with ball velocities above 85 miles per hour (MPH) and 23 college pitchers whose velocities were below 77 MPH.
The Doppler velocities [v.sub.1] and [v.sub.2] can be deduced from [mathematical expression not reproducible], respectively, with (1).
Velocity in seawater varies with depth and velocities at different depth can be matched in Figure 1d.
In addition, most of the time when I have to profile injection velocities, it is to process around a design or tooling issue.
(2008), studying different velocities in different cultivation systems, observed that the increase in velocity caused decrease in effective and specific fuel consumptions.
Thus, the present study examined parameters that are more easily obtained in the field and considered to provide an equivalent log velocity based on living tree velocities. The results indicate that base logs are better correlated with the velocities measured in trees, because the measurement in trees is performed at the stem base.

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