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Created page with 'File:lighterstill.jpgright|frame ==Etymology== Latin acceleratus, past participle of accelerare, from ad- + celer swift *Date: circa [http...'
[[File:lighterstill.jpg]][[File:Accelerationpic.jpg|right|frame]]
==Etymology==
[[Latin]] acceleratus, past participle of accelerare, from ad- + celer swift
*Date: circa [http://www.wikipedia.org/wiki/16th_Century 1530]
==Definitions==
*1 : to bring about at an earlier [[time]] <accelerate their departure>
*2 : to [[cause]] to move faster <accelerated his steps>; also : to cause to undergo acceleration
*3 a : to hasten the [[progress]] or [[development]] of <accelerate our [[efforts]]>
:b : increase <accelerate food production>
*4 a : to enable (a student) to complete a [[course]] in less than usual [[time]]
:b : to [[speed]] up (as a [[course]] of [[study]])
==Description==
In [[physics]], and more specifically [[kinematics]], '''acceleration''' is the [[change]] in [[velocity]] over time. Because velocity is a [[vector]], it can [[change]] in two ways: a change in [[magnitude]] and/or a change in direction. In one [[dimension]], i.e. a line, acceleration is the [[rate]] at which something [[speed]]s up. However, as a vector [[quantity]], acceleration is also the rate at which direction changes. Acceleration has the dimensions L T −2. In SI units, acceleration is [[measured]] in meters per second squared (m/s2).
In common [[speech]], the term acceleration commonly is used for an increase in [[speed]] (the [[magnitude]] of [[velocity]]); a decrease in [[speed]] is called deceleration. In [[physics]], a change in the direction of velocity also is an acceleration: for rotary [[motion]], the change in direction of velocity results in centripetal (toward the [[center]]) acceleration; where as the rate of change of speed is a [[tangent]]ial acceleration.
[[File:Acceleration.jpg]]
In [http://en.wikipedia.org/wiki/Classical_mechanics classical mechanics], for a [[body]] with constant [[mass]], the acceleration of the body is [[proportional]] to the resultant ([[total]]) [[force]] acting on it ([http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion Newton's second law]) where F is the resultant [[force]] acting on the body, m is the mass of the body, and a is its acceleration.[http://en.wikipedia.org/wiki/Acceleration]
[[Category: Physics]]
==Etymology==
[[Latin]] acceleratus, past participle of accelerare, from ad- + celer swift
*Date: circa [http://www.wikipedia.org/wiki/16th_Century 1530]
==Definitions==
*1 : to bring about at an earlier [[time]] <accelerate their departure>
*2 : to [[cause]] to move faster <accelerated his steps>; also : to cause to undergo acceleration
*3 a : to hasten the [[progress]] or [[development]] of <accelerate our [[efforts]]>
:b : increase <accelerate food production>
*4 a : to enable (a student) to complete a [[course]] in less than usual [[time]]
:b : to [[speed]] up (as a [[course]] of [[study]])
==Description==
In [[physics]], and more specifically [[kinematics]], '''acceleration''' is the [[change]] in [[velocity]] over time. Because velocity is a [[vector]], it can [[change]] in two ways: a change in [[magnitude]] and/or a change in direction. In one [[dimension]], i.e. a line, acceleration is the [[rate]] at which something [[speed]]s up. However, as a vector [[quantity]], acceleration is also the rate at which direction changes. Acceleration has the dimensions L T −2. In SI units, acceleration is [[measured]] in meters per second squared (m/s2).
In common [[speech]], the term acceleration commonly is used for an increase in [[speed]] (the [[magnitude]] of [[velocity]]); a decrease in [[speed]] is called deceleration. In [[physics]], a change in the direction of velocity also is an acceleration: for rotary [[motion]], the change in direction of velocity results in centripetal (toward the [[center]]) acceleration; where as the rate of change of speed is a [[tangent]]ial acceleration.
[[File:Acceleration.jpg]]
In [http://en.wikipedia.org/wiki/Classical_mechanics classical mechanics], for a [[body]] with constant [[mass]], the acceleration of the body is [[proportional]] to the resultant ([[total]]) [[force]] acting on it ([http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion Newton's second law]) where F is the resultant [[force]] acting on the body, m is the mass of the body, and a is its acceleration.[http://en.wikipedia.org/wiki/Acceleration]
[[Category: Physics]]