- the act of accelerating; increase of speed or velocity.
- a change in velocity.
- Mechanics. the time rate of change of velocity with respect to magnitude or direction; the derivative of velocity with respect to time.
Origin of acceleration
Examples from the Web for acceleration
And if the effect of acceleration was stronger in some patches than others, that would mean less or more clumping up of galaxies.Using Black Holes to Measure Dark Energy, Like a BOSS
Matthew R. Francis
April 13, 2014
That return, and that acceleration, are not coincidences either.Ukraine Is On the Verge Of War And Putin Is To Blame
February 20, 2014
It has three sensors which track steps, acceleration, and altitude.Can I Lose Weight Playing Video Games?
January 14, 2014
Jones, the face of the burgeoning organization, has been taken aback by the acceleration of interest.Sunday Assembly Is the Hot New Atheist Church
September 21, 2013
Smartphone apps like Grindr have been able to parlay that acceleration of trust (and, dare we say, desire) into a big business.Generation Naive: Why Young People Can’t Help Falling for Strangers Online
March 25, 2013
"Get on the acceleration couch," said Marcus as he did so himself.
Wilbur awakened with a start, sitting on the edge of the acceleration diaphragm.
The Ardan missiles were powered for an acceleration of one hundred gravities.Masters of Space
Edward Elmer Smith
You do not really employ that barbarous method of acceleration?The Adventures of Harry Revel
Sir Arthur Thomas Quiller-Couch
"All the other Gerns are by now in their acceleration couches," he said.Space Prison
- the act of accelerating or the state of being accelerated
- the rate of increase of speed or the rate of change of velocitySymbol: a
- the power to accelerateSymbol: a
Word Origin and History for acceleration
1530s, from Latin accelerationem (nominative acceleratio) "a hastening," noun of action from past participle stem of accelerare (see accelerate).
- The rate of change of the velocity of a moving body. An increase in the magnitude of the velocity of a moving body (an increase in speed) is called a positive acceleration; a decrease in speed is called a negative acceleration. Acceleration, like velocity, is a vector quantity, so any change in the direction of a moving body is also an acceleration. A moving body that follows a curved path, even when its speed remains constant, is undergoing acceleration. See more at gravity relativity.
A change in the velocity of an object.