velocity(redirected from First temporal derivative of displacement)
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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.
a. The rate of speed of action or occurrence.
b. The rate at which money changes hands in an economy.
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.
syn: See speed.
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.
Rate of motion in a particular direction.
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|Noun||1.||velocity - distance travelled per unit time |
angular velocity - (physics) the rate of change of the angular position of a rotating body; usually expressed in radians per second or radians per minute
airspeed - the speed of an aircraft relative to the air in which it is flying
escape velocity - the minimum velocity needed to escape a gravitational field
groundspeed - the speed of an aircraft relative to the ground
hypervelocity - excessive velocity; "the meteorites struck the earth with hypervelocity impacts"
muzzle velocity - the velocity of a projectile as it leaves the muzzle of a gun
peculiar velocity - velocity with respect to the local standard of rest
radial velocity - velocity along the line of sight toward or away from the observer
light 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 second
steerageway - (nautical) the minimum rate of motion needed for a vessel to be maneuvered
terminal velocity - the constant maximum velocity reached by a body falling through the atmosphere under the attraction of gravity
rate - 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[vɪˈlɒsɪtɪ] N → velocidad f
velocity[vɪˈlɒsəti] n → vitesse f
n → Geschwindigkeit f
velocity[vɪˈlɒsɪtɪ] n → velocità f inv
speed, especially in a given direction. snelheid سُرْعَه бързина velocidade rychlost die Geschwindigkeit hastighed; velocitet ταχύτηταvelocidad kiirus سرعت nopeus vélocitéמהירות वेग brzina sebesség kecepatan hraði velocità 速度 속도 greitis ātrums halaju snelheidhastighet, fartszybkość ګړنديتوب، چابكتيا، چټكي ( سرعت velocidade viteză скорость, быстрота rýchlosť hitrost brzina hastighet ความเร็ว hız, sürat 速度 швидкість رفتار vận tốc, tốc độ 速度