Acceleration - Revision history

Jmdonev: 1 revision imported

2018-05-18T22:53:16Z

1 revision imported

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Jmdonev: /* For Further Reading */

2018-05-18T20:50:52Z

For Further Reading

← Older revision		Revision as of 20:50, 18 May 2018
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	[[Category:Done ~~2016~~-04-30]]		[[Category:Done 2018-05-18]]
	<onlyinclude>'''Acceleration''' is the rate of change of [[velocity]], meaning that if an objects [[speed]] or direction is changing, it is undergoing an acceleration.</onlyinclude> The [[SI]] unit for acceleration is [[meter\|m<sup>2</sup>]]/[[second\|s]]. Acceleration is felt by an object when the net [[force]] acting on it is non-zero. An object is said to be in constant motion when its velocity isn't changing, therefore the acceleration must be zero. Acceleration is represented by the equation:		<onlyinclude>'''Acceleration''' is the rate of change of [[velocity]], meaning that if an objects [[speed]] or direction is changing, it is undergoing an acceleration.</onlyinclude><ref name=Knight>R. D. Knight, "Kinematics in Two Dimensions" and "Forces and Motion" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 2nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, pp. 90-145</ref> The [[SI]] unit for acceleration is [[meter\|m<sup>2</sup>]]/[[second\|s]]. Acceleration is felt by an object when the net [[force]] acting on it is non-zero.<ref name=Knight/> An object is said to be in constant motion when its velocity isn't changing, therefore the acceleration must be zero. Acceleration is represented by the equation:<ref name=Knight/>

	<center><m>\vec{a}=\frac{\Delta\vec{v}}{\Delta t}</m></center>		<center><math>\vec{a}=\frac{\Delta\vec{v}}{\Delta t}</math></center>

	where:		where:

	* <m>\Delta \vec{v}</m> is the change in velocity		:* <math>\Delta \vec{v}</math> is the change in velocity
	* <m>\Delta t</m> is the change in time		:* <math>\Delta t</math> is the change in time
	* <m>\vec{a}</m> is the acceleration		:* <math>\vec{a}</math> is the acceleration

	The arrow above velocity and acceleration indicates that it is a [[vector]], meaning it has a direction associated with it.		The arrow above velocity and acceleration indicates that it is a [[vector]], meaning it has a direction associated with it.
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	==Acceleration in common experience==		==Acceleration in common experience==

	Acceleration is felt frequently in our daily lives. When riding in a moving vehicle, it feels ~~as if you are~~ standing or sitting still for the most ~~part, until~~ the vehicle's speed or direction changes. As soon as this happens, the force caused by this acceleration is felt by your body, as it is pushed to keep up with the changing velocity of the vehicle. In order for your body to accelerate with the vehicle, a seat is required to provide the push on your body. This is why people standing on a train or bus are susceptible to falling, because when the vehicle accelerates there is no object providing the force needed to match the acceleration. This is the same reason why tossing an object in the air in an accelerating vehicle isn't a good idea.		Acceleration is felt frequently in our daily lives. When riding in a moving vehicle, the motion feels constant when standing or sitting still for the most part—until the vehicle's speed or direction changes.<ref name=Knight/> As soon as this happens, the force caused by this acceleration is felt by your body, as it is pushed to keep up with the changing velocity of the vehicle. In order for your body to accelerate with the vehicle, a seat is required to provide the push on your body. This is why people standing on a train or bus are susceptible to falling, because when the vehicle accelerates there is no object providing the force needed to match the acceleration. This is the same reason why tossing an object in the air in an accelerating vehicle isn't a good idea.

	All objects with [[mass]] exert a gravitational [[force]] on other massive objects, which means that there is an [[acceleration due to gravity]] between any two objects. This is of common experience on Earth, as objects falling towards the Earth pick up speed as they fall (limited by [[air drag]]~~, however~~).		All objects with [[mass]] exert a gravitational [[force]] on other massive objects, which means that there is an [[acceleration due to gravity]] between any two objects. This is a common experience on Earth, as objects falling towards the Earth pick up speed as they fall (however, they are limited by [[air drag]]).<ref name=Knight/>

			==PhET Simulation on Forces==
			The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following PhET simulation. Explore out the PhET animation below to explore how forces cause acceleration.

			<html><iframe src="http://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-basics_en.html" width="800" height="600"></iframe></html>

			== For Further Reading ==
			For further information please see the related pages below:
			*[[Force]]
			*[[Kinetic energy]]
			*[[Potential energy]]
			*[[Mechanical energy]]
			*[[Momentum]]
			*Or explore a [[Special:Random\|random page]]

			==References==
			{{reflist}}
	[[Category:Uploaded]]		[[Category:Uploaded]]

Jmdonev: 1 revision imported: From the summer

2016-09-17T22:29:18Z

1 revision imported: From the summer

← Older revision	Revision as of 22:29, 17 September 2016
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Jmdonev at 22:45, 8 March 2016

2016-03-08T22:45:11Z

← Older revision		Revision as of 22:45, 8 March 2016
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	[[Category:Done ~~2015~~-06-11]]		[[Category:Done 2016-04-30]]
	<onlyinclude>'''Acceleration''' is the rate of change of [[velocity]], meaning that if an objects [[speed]] or direction is changing, it is undergoing an acceleration.</onlyinclude> The [[SI]] unit for acceleration is [[meter\|m<sup>2</sup>]]/[[second\|s]]. Acceleration is felt by an object when the net [[force]] acting on it is non-zero. An object is said to be in constant motion when its velocity isn't changing, therefore the acceleration must be zero. Acceleration is represented by the equation:		<onlyinclude>'''Acceleration''' is the rate of change of [[velocity]], meaning that if an objects [[speed]] or direction is changing, it is undergoing an acceleration.</onlyinclude> The [[SI]] unit for acceleration is [[meter\|m<sup>2</sup>]]/[[second\|s]]. Acceleration is felt by an object when the net [[force]] acting on it is non-zero. An object is said to be in constant motion when its velocity isn't changing, therefore the acceleration must be zero. Acceleration is represented by the equation:

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	* <m>\vec{a}</m> is the acceleration		* <m>\vec{a}</m> is the acceleration

	The arrow above velocity and acceleration indicates that it is a vector, meaning it has a direction associated with it.		The arrow above velocity and acceleration indicates that it is a [[vector]], meaning it has a direction associated with it.

	==Acceleration in common experience==		==Acceleration in common experience==

J.williams: 1 revision imported

2015-08-26T21:30:39Z

1 revision imported

← Older revision	Revision as of 21:30, 26 August 2015
(No difference)

J.williams at 22:41, 11 August 2015

2015-08-11T22:41:05Z

New page

[[Category:Done 2015-06-11]]
<onlyinclude>'''Acceleration''' is the rate of change of [[velocity]], meaning that if an objects [[speed]] or direction is changing, it is undergoing an acceleration.</onlyinclude> The [[SI]] unit for acceleration is [[meter|m<sup>2</sup>]]/[[second|s]]. Acceleration is felt by an object when the net [[force]] acting on it is non-zero. An object is said to be in constant motion when its velocity isn't changing, therefore the acceleration must be zero. Acceleration is represented by the equation:

<center><m>\vec{a}=\frac{\Delta\vec{v}}{\Delta t}</m></center>

where:

* <m>\Delta \vec{v}</m> is the change in velocity
* <m>\Delta t</m> is the change in time
* <m>\vec{a}</m> is the acceleration

The arrow above velocity and acceleration indicates that it is a vector, meaning it has a direction associated with it.

==Acceleration in common experience==

Acceleration is felt frequently in our daily lives. When riding in a moving vehicle, it feels as if you are standing or sitting still for the most part, until the vehicle's speed or direction changes. As soon as this happens, the force caused by this acceleration is felt by your body, as it is pushed to keep up with the changing velocity of the vehicle. In order for your body to accelerate with the vehicle, a seat is required to provide the push on your body. This is why people standing on a train or bus are susceptible to falling, because when the vehicle accelerates there is no object providing the force needed to match the acceleration. This is the same reason why tossing an object in the air in an accelerating vehicle isn't a good idea.

All objects with [[mass]] exert a gravitational [[force]] on other massive objects, which means that there is an [[acceleration due to gravity]] between any two objects. This is of common experience on Earth, as objects falling towards the Earth pick up speed as they fall (limited by [[air drag]], however).
[[Category:Uploaded]]