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Conservation of Momentum
  
 
Terms and Formulae
Terms
Center of Mass  -  The point at which a given net force acting on the system will produce the same acceleration as if all the mass were concentrated at that point.
Impulse  -  A force applied over a period of time. See definition of impulse.
Momentum  -  The product of an object's mass and velocity. See definition of momentum.
Conservation of Momentum  -  The principle stating that for any system with no external forces acting on it, momentum will be conserved.
Formulae
Position of the center of mass of a system of particles xcm =
mnxn
Velocity of the center of mass of a system of particles vcm =
mnvn
Acceleration of the center of mass of a system of particles acm =
mnan
Acceleration of the center of mass of a system of particles given an external force
Fext = Macm
Definition of Impulse J = FΔt
Change in velocity caused by an impulse J = mvf - mvo
Definition of momentum p = mv
Relation between force and momentum
=
F
Impulse-Momentum Theorem J = Δp
Definition of the linear momentum of a system of particles P = Mvcm
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