Difference between revisions of "Momentum"
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<math>\vec{p}=m \vec{v}</math> | <math>\vec{p}=m \vec{v}</math> | ||
− | + | The central importance of momentum is due Newton's second law which states or rather defines Force <math>\vec{F}</math> acting on a body to be equal to it's rate of change of momentum.That is if <math>\vec{F}</math> is the net force acting on a body then we have | |
+ | <math>\vec{F}=\frac{d \vec{p}}{dt}</math> | ||
+ | This means if a body moves such that it's momentum vector remains invariant with time then we can conclude that there is no net Force acting on it | ||
[[Category:Physics]] | [[Category:Physics]] |
Revision as of 07:49, 20 February 2008
Momentum is the measure of 'how' much motion a body posses and is of prime importance to Mechanics,
Mathematically if we have a body of mass moving with velocity
then it's momentum
is defined as
The central importance of momentum is due Newton's second law which states or rather defines Force
acting on a body to be equal to it's rate of change of momentum.That is if
is the net force acting on a body then we have
This means if a body moves such that it's momentum vector remains invariant with time then we can conclude that there is no net Force acting on it