Changes

==Etymology==

==Etymology==

[[Latin]] acceleratus, past participle of accelerare,  from ad- + celer swift  

[[Latin]] acceleratus, past participle of accelerare,  from ad- + celer swift  

*Date: circa [http://www.wikipedia.org/wiki/16th_Century 1530]

*Date: circa [https://www.wikipedia.org/wiki/16th_Century 1530]

==Definitions==

==Definitions==

*1 : to bring about at an earlier [[time]] <accelerate their departure>

*1 : to bring about at an earlier [[time]] <accelerate their departure>

*4 a : to enable (a student) to complete a [[course]] in less than usual [[time]]  

*4 a : to enable (a student) to complete a [[course]] in less than usual [[time]]  

:b : to [[speed]] up (as a [[course]] of [[study]])

:b : to [[speed]] up (as a [[course]] of [[study]])

==Description==

==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 [[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).

[[File:Acceleration.jpg]]

[[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]

In [https://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 ([https://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.[https://en.wikipedia.org/wiki/Acceleration]

[[Category: Physics]]

[[Category: Physics]]