This article may document a neologism in such a manner as to promote it. Please add more reliable sources to establish its current use and the impact the term has had on its field. Otherwise consider renaming or deleting the article. (May 2011) 
In physics, yank is the derivative of force with respect to time.^{[1]} Expressed as an equation, yank Y is:
where F is force and is the derivative with respect to time .
The term yank is not universally recognized but is commonly used.^{[citation needed]} The units of yank are force per time, or equivalently, mass times length per time cubed; in the SI unit system this is kilogram metres per second cubed (kg·m/s^{3}), or Newtons per second (N/s).
Relation to other physical quantities
Newton's second law of motion says that:
where p is momentum, so if we combine the above two equations:
where is mass and v is velocity. If the mass isn't changing over time (i.e. it's constant), then:
which can also be written as:
where j is jerk.
References
 ↑ Gragert, Stephanie (November 1998). What is the term used for the third derivative of position?. Usenet Physics and Relativity FAQ. Math Dept., University of California, Riverside. Retrieved on 20080312.
See also
This physicsrelated article could benefit from further information. You can help us by expanding it. 
hu:Yank mr:जोर (चलनगतिकी) scn:Strantuliuni tr:Gücüm
This article uses material from the Wikipedia article Yank (physics), that was deleted or is being discussed for deletion, which is released under the Creative Commons AttributionShareAlike 3.0 Unported License.
