speed

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speed,

change in distance with respect to time. Speed is a scalar rather than a vectorvector,
quantity having both magnitude and direction; it may be represented by a directed line segment. Many physical quantities are vectors, e.g., force, velocity, and momentum.
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 quantity; i.e., the speed of a body tells one how fast the body is moving but not the direction of the motion. If during time t a body travels over a distance s, then the average speed of that body is equal to s/t. The speed and direction of a body's motion together determine the body's velocityvelocity,
change in displacement with respect to time. Displacement is the vector counterpart of distance, having both magnitude and direction. Velocity is therefore also a vector quantity. The magnitude of velocity is known as the speed of a body.
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Speed

The time rate of change of position of a body without regard to direction. It is the numerical magnitude only of a velocity and hence is a scalar quantity. Linear speed is commonly measured in such units as meters per second, miles per hour, or feet per second.

Average linear speed is the ratio of the length of the path traversed by a body to the elapsed time during which the body moved through that path. Instantaneous speed is the limiting value of the foregoing ratio as the elapsed time approaches zero. See Velocity

speed

[spēd]
(graphic arts)
The sensitivity of a photographic film, expressed according to one of several scales.
(mechanics)
The time rate of change of position of a body without regard to direction; in other words, the magnitude of the velocity vector.
(optics)
The light-gathering power of a lens, expressed as the reciprocal of the f number.
The time that a camera shutter is open.
(physics)
In general, the rapidity with which a process takes place.

Speed

an “illiterate loiterer”; slow-moving servant. [Br. Lit.: Two Gentlemen of Verona]

speed

1. Physics
a. a scalar measure of the rate of movement of a body expressed either as the distance travelled divided by the time taken (average speed) or the rate of change of position with respect to time at a particular point (instantaneous speed). It is measured in metres per second, miles per hour, etc.
b. (not in technical usage) another word for velocity
2. a rate of rotation, usually expressed in revolutions per unit time
3. a gear ratio in a motor vehicle, bicycle, etc.
4. Photog a numerical expression of the sensitivity to light of a particular type of film, paper, or plate
5. Photog a measure of the ability of a lens to pass light from an object to the image position, determined by the aperture and also the transmitting power of the lens. It increases as the f-number is decreased and vice versa
6. a slang word for amphetamine

SPEED

Early system on LGP-30. Listed in CACM 2(5):16 (May 1959).
References in periodicals archive ?
He is certainly censured for the hastiness of his heretical thoughts, but only because he has failed to try everything else first, namely the exorcism of Lithia.
Indifference, hastiness, or haughtiness--to name a few of the vices to which professors may be prone--at the head of a class on the history of morality and religion risks engendering in students a moral relativism that treats all ideas as equally valid or a nihilism that holds all claims about justice and the human good to be equally false.
They are wise, but they have linked action with hastiness, and they have failed to protect their trees.
A leading trait of Bruckner's Symphonies is its interdisciplinary ambition, which is generally admirable but at times comes at the cost of a certain hastiness of thought.
Curiously, however, after a while Shaham's concept of Dvorak began to weary me, because so much of it was over-done--tone, contrast, dynamic waves enough to threaten an avalanche, and above all the fast tempi which in my view lend Dvorak's music an unnecessary hastiness and one-sidedness.
97) Even some trade leaders themselves remained resistant to the idea of promoting women, stating that "Any hastiness in terms of advancing women to responsible posts could turn out to be very harmful:" after all, "a woman is [just] a woman.
More surprising is the hastiness with which Ferguson dismisses the many imperial exhibitions which were mounted in Britain, elsewhere in the colonies as well as in Europe following the great success of the 1851 Exhibition.
But Stone's hastiness in trying to solve the case leads him up the garden path and to a dressing-down from his bosses.
For Montague, looking to the Spenserian past 'without hastiness of bias' presented an opportunity to reclaim a source of poetic authority in the lace of the 'exhausted' inheritance of the Irish Revival" (124).
He doesn't need to dwell any more on Lowe's hastiness or concern himself at what a rough old trade football can be.
Other group terms include a hastiness of cooks, a shrewdness of apes, a cloud of flies and a piteousness of doves.
From the broad historical perspective of Florovsky, the Ecumenical Movement was just getting started, and, as a veteran optimist, he saw hastiness and impatience as a very serious danger to the ponderous work of ecumenism for the reunification of Christendom.