Momentum - Revision history

Jmdonev: 1 revision imported

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Energy>Jmdonev at 21:11, 19 January 2020

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← Older revision		Revision as of 21:11, 19 January 2020
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	[[Category:Done ~~2018~~-05-18]]		[[Category:Done 2020-01-31]]
	<onlyinclude>'''Momentum''' is a property of an object's motion. When a push or a pull (a [[force]]) acts on an object and changes its motion, the quantity that gets changed is momentum. [[Energy]] is required to change the magnitude (size) of momentum, but not its direction.</onlyinclude><ref name=Knight>R. D. Knight, "Impulse and momentum" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 3nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, ch.9, sec 1, pp. 242.</ref> Specifically, momentum (written as <math>p</math>) is the [[mass]] of the object times its [[velocity]] (or [[speed]] with direction):<ref>There are corrections to this expression when the object is going near the [[speed of light]], see [http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/relmom.html#c1 hyperphysics] for more details</ref>		<onlyinclude>'''Momentum''' is a property of an object's motion. When a push or a pull (a [[force]]) acts on an object and changes its motion, the quantity that gets changed is momentum. [[Energy]] is required to change the magnitude (size) of momentum, but not its direction.</onlyinclude><ref name=Knight>R. D. Knight, "Impulse and momentum" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 3nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, ch.9, sec 1, pp. 242.</ref> Specifically, momentum (written as <math>p</math>) is the [[mass]] of the object times its [[velocity]] (or [[speed]] with direction):<ref>There are corrections to this expression when the object is going near the [[speed of light]], see [http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/relmom.html#c1 hyperphysics] for more details</ref>

	<center><math>\vec{p}=m\vec{v}</math></center>		<center><math>\vec{p}=m\vec{v}</math></center>

			A force exerted for an amount of time gives a change in momentum (a force exerted over a distance is [[work]] instead of a change in momentum):
			<center><math>\Delta \vec{p}=\vec{F}_{net} \Delta t</math></center>

	Massive objects have more momentum for a given speed, while lighter objects have less momentum. This is why it takes more effort (force) to stop a fully loaded truck than an empty one. Likewise, faster moving objects have more momentum than slower moving objects.		Massive objects have more momentum for a given speed, while lighter objects have less momentum. This is why it takes more effort (force) to stop a fully loaded truck than an empty one. Likewise, faster moving objects have more momentum than slower moving objects.
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	<center><math>KE = \frac{p^2}{2m}</math></center>		<center><math>KE = \frac{p^2}{2m}</math></center>

			[[File:pitching.jpg\|800px\|center\|thumb\|Figure 1. A pitcher exerts a force on a baseball in order to increase its momentum. His arm goes back as far as possible and then as forward as possible in order to maximize the time the force was applied.<ref>Wikimedia Commons [Online], Available: https://upload.wikimedia.org/wikipedia/commons/2/25/Baseball_pitching_motion_2004.jpg</ref>]]

	Momentum is an important physics concept, to learn more about momentum please see [http://hyperphysics.phy-astr.gsu.edu/hbase/mom.html#mom hyperphysics].		Momentum is an important physics concept, to learn more about momentum please see [http://hyperphysics.phy-astr.gsu.edu/hbase/mom.html#mom hyperphysics].

	~~==Phet Simulation==~~
	The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. Explore this simulation to see how momentum is transferred in collisions along with energy:

	~~<html>~~
	~~<iframe src="https://phet.colorado.edu/sims/collision-lab/collision-lab_en.html" width="800" height="600" scrolling="no" allowfullscreen></iframe></html>~~

	== For Further Reading ==		== For Further Reading ==

Jmdonev: 1 revision imported

2018-05-18T22:53:16Z

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Jmdonev at 21:10, 18 May 2018

2018-05-18T21:10:10Z

← Older revision		Revision as of 21:10, 18 May 2018
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	[[Category:Done ~~2015~~-09-05]]		[[Category:Done 2018-05-18]]
	<onlyinclude>'''Momentum''' is a property of an object's motion. When a push or a pull (a [[force]]) acts on an object and changes its motion, the quantity that gets changed is momentum.~~</onlyinclude> Specifically, momentum (written as <m>p</m>) is the~~ [[~~mass~~]] of ~~the object times~~ its ~~[[velocity]] (or [[speed]] with~~ direction):<ref name=Knight>R. D. Knight, "Impulse and momentum" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 3nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, ch.9, sec 1, pp. 242.</ref><ref>There are corrections to this expression when the object is going near the [[speed of light]], see [http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/relmom.html#c1 hyperphysics] for more details</ref>		<onlyinclude>'''Momentum''' is a property of an object's motion. When a push or a pull (a [[force]]) acts on an object and changes its motion, the quantity that gets changed is momentum. [[Energy]] is required to change the magnitude (size) of momentum, but not its direction.</onlyinclude><ref name=Knight>R. D. Knight, "Impulse and momentum" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 3nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, ch.9, sec 1, pp. 242.</ref> Specifically, momentum (written as <math>p</math>) is the [[mass]] of the object times its [[velocity]] (or [[speed]] with direction):<ref>There are corrections to this expression when the object is going near the [[speed of light]], see [http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/relmom.html#c1 hyperphysics] for more details</ref>

	<center><m>p=mv</m></center>		<center><math>\vec{p}=m\vec{v}</math></center>

	Massive objects have more momentum for a given speed, while lighter objects have less momentum. This is why it takes more effort (force) to stop a fully loaded truck than an empty one. Likewise, faster moving objects have more momentum than slower moving objects.		Massive objects have more momentum for a given speed, while lighter objects have less momentum. This is why it takes more effort (force) to stop a fully loaded truck than an empty one. Likewise, faster moving objects have more momentum than slower moving objects.

	One way to express [[kinetic energy]] is in terms of momentum (<m>p</m>):		One way to express [[kinetic energy]] is in terms of momentum (<math>p</math>):

	<center><m>KE = \frac{p^2}{2m}</m></center>		<center><math>KE = \frac{p^2}{2m}</math></center>

	Momentum is an important physics concept, to learn more about momentum please see [http://hyperphysics.phy-astr.gsu.edu/hbase/mom.html#mom hyperphysics].		Momentum is an important physics concept, to learn more about momentum please see [http://hyperphysics.phy-astr.gsu.edu/hbase/mom.html#mom hyperphysics].

			==Phet Simulation==
			The [http://phet.colorado.edu/ University of Colorado] has graciously allowed us to use the following Phet simulation. Explore this simulation to see how momentum is transferred in collisions along with energy:

			<html>
			<iframe src="https://phet.colorado.edu/sims/collision-lab/collision-lab_en.html" width="800" height="600" scrolling="no" allowfullscreen></iframe></html>

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

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

J.williams: 1 revision imported

2015-09-03T18:22:26Z

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Jmdonev at 18:34, 28 August 2015

2015-08-28T18:34:30Z

New page

[[Category:Done 2015-09-05]]
<onlyinclude>'''Momentum''' is a property of an object's motion. When a push or a pull (a [[force]]) acts on an object and changes its motion, the quantity that gets changed is momentum.</onlyinclude> Specifically, momentum (written as <m>p</m>) is the [[mass]] of the object times its [[velocity]] (or [[speed]] with direction):<ref name=Knight>R. D. Knight, "Impulse and momentum" in ''Physics for Scientists and Engineers: A Strategic Approach,'' 3nd ed. San Francisco, U.S.A.: Pearson Addison-Wesley, 2008, ch.9, sec 1, pp. 242.</ref><ref>There are corrections to this expression when the object is going near the [[speed of light]], see [http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/relmom.html#c1 hyperphysics] for more details</ref>

<center><m>p=mv</m></center>

Massive objects have more momentum for a given speed, while lighter objects have less momentum. This is why it takes more effort (force) to stop a fully loaded truck than an empty one. Likewise, faster moving objects have more momentum than slower moving objects.

One way to express [[kinetic energy]] is in terms of momentum (<m>p</m>):

<center><m>KE = \frac{p^2}{2m}</m></center>

Momentum is an important physics concept, to learn more about momentum please see [http://hyperphysics.phy-astr.gsu.edu/hbase/mom.html#mom hyperphysics].

==References==
{{reflist}}