conservation of momentum

conservation of momentum
noun
the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system
Hypernyms: ↑conservation

* * *

: a principle in physics: the total linear momentum of a system of particles not acted upon by external forces is constant in magnitude and direction irrespective of any reactions among the parts of the system

* * *

conservation of momentum,
Physics. the principle that the total momentum of any system of revolving or colliding bodies remains constant in the absence of outside forces.

Useful english dictionary. 2012.

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