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IEVref:113-03-13ID:
Language:enStatus: Standard
Term: momentum
Synonym1:
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Symbol: p
Definition: vector quantity equal to the product of the mass m of a body and the velocity v of its centre of mass, thus p = mv

NOTE 1 For a continuous body in a domain D, momentum is equal to the integral p= D ρ vdV= D vdm MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX garuavP1wzZbItLDhis9wBH5garmWu51MyVXgarqqtubsr4rNCHbGe aGqk0di9Wr=fpeei0di9v8qiW7rqqrVepeea0xe9LqFf0xc9q8qqaq Fn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpe WZqaaeaaciWacmGadaGadeaabaGaaqaaaOqaaiaahchacqGH9aqpda Wdraqaaiabeg8aYbWcbaqcLbmacaqGebaaleqaniabgUIiYdGccaaM c8Eefi0BVTgib5gDPfxDHbacfmGaa8NDaKqzaeGaaiizaOGaamOvai abg2da9maapebabaGaa8NDaKqzaeGaaiizaiaad2gaaSqaaKqzadGa aeiraaWcbeqdcqGHRiI8aaaa@5252@ , where ρ is the mass density in a domain having quasi-infinitesimal volume dV and mass dm, and velocity v. For a system of bodies, it is equal to the sum of their momentums.

NOTE 2 If the sum of external forces is equal to zero, momentum of a body follows a law of conservation.

NOTE 3 If the theory of relativity is applied, m is relativistic mass.

NOTE 4 The coherent SI unit of momentum is kilogram metre per second, kg·m·s−1.


Publication date:2011-04
Source:
Replaces:
Internal notes:2014-07-07: Symbol <i>p</i> corrected to <b><i>p</i></b>. JGO

2017-06-02: Cleanup - Remove Attached Image 113-03-13en.gif
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