This is just here as a test because I lose it
Term information
definition
In classical mechanics, momentum (pl. momenta; SI unit kg times m/s, or, equivalently, N times s) is the product of the mass and velocity of an object (p = mv). Like velocity, momentum is a vector quantity, possessing a direction as well as a magnitude. Momentum is a conserved quantity (law of conservation of linear momentum), meaning that if a closed system is not affected by external forces, its total momentum cannot change. Momentum is sometimes referred to as linear momentum to distinguish it from the related subject of angular momentum. source: http://en.wikipedia.org/wiki/Momentum