the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system.
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law of conservation of momentum
In a closed system with no external forces acting upon it, the momentum of the system is constant.
linear momentum. A rocket works by expelling gases from one end at a very high velocity. The escaping gases have a very high speed and this with their mass translates to a very large momentum. Due to the principle of conservation of momentum the body of the rocket is pushed forward. If both the momentum of the gases as well as that of the rocket are added the sum is zero.
No, that is Newton's Third Law of Motion. The Law of Conservation of Momentum is that within a contained set of objects, the total momentum never changes. Objects can only transfer energy to each other, they can never really "get rid" of it.
There is no one "law of conservation", there are several laws, such as conservation of energy, conservation of mass, conservation of electric charge, conservation of rotational momentum, etc.What is always true is that there is SOME quantity that doesn't change in the case of a closed system.