# conservation of momentum

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Related to conservation of momentum: Conservation of Angular Momentum

## Conservation of momentum

The principle that, when a system of masses is subject only to forces that masses of the system exert on one another, the total vector momentum of the system is constant. Since vector momentum is conserved, in problems involving more than one dimension the component of momentum in any direction will remain constant. The principle of conservation of momentum holds generally and is applicable in all fields of physics. In particular, momentum is conserved even if the particles of a system exert forces on one another or if the total mechanical energy is not conserved. Use of the principle of conservation of momentum is fundamental in the solution of collision problems. See Collision (physics), Momentum

## conservation of momentum

The principle that in any system of interacting bodies the total linear momentum in a fixed direction is constant provided that there is no external force acting on the system in that direction. The angular momentum of a system of bodies rotating and/or revolving about a fixed axis is also conserved provided that no external torque is applied.

## conservation of momentum

[‚kän·sər′vā·shən əv mə′mən·təm]
(mechanics)
The principle that, when a system of masses is subject only to internal forces that masses of the system exert on one another, the total vector momentum of the system is constant; no violation of this principle has been found. Also known as momentum conservation.
References in periodicals archive ?
Specifically, we maintain that the law of conservation of momentum holds when the system of bodies associated with local potentials of space will in total neither lose nor gain quanta from the surrounding systems.
So in any closed system the conservation of momentum is a solid law.
The purpose of this study was to quantify momentum before contact in the tackle, and using the basic physical principles of conservation of momentum and energy (and the associated assumptions), calculate the magnitude of impact during real match situations for the ball-carrier and tackler.
The conservation of momentum accounts for the various forces that are exerted on the elemental volume of smoke in the shaft:
This principle defines the conservation of momentum, which leads to Bernoulli's equation when viscous forces are neglected, steady flow and constant density are assumed.
The law of conservation of momentum was the first of the conservation laws to be understood, but others would, in time, follow, and all are fundamental to our understanding of the structure and functioning of the Universe.
There is no explanation for this behaviour in standard physics, and it also violates the conservation of momentum, and Shawyer's own attempt to explain it using special relativity is not convincing, as this theory also should obey the conservation of momentum (Mullins, 2006).
In addition, in the areas such as physics, mechanics, engineering and so on, there are three very important laws: the law of conservation of energy, the law of conservation of momentum and the law of conservation of angular momentum.
Given data on position and velocity over time, the computer found energy laws, and for the pendulum, the law of conservation of momentum.
Lavoisier had advanced the law of conservation of mass (see 1789) and before that there had been the law of conservation of momentum (see 1668).
However, the field equations Einstein  used to describe the general-relativistic space-time are founded on the conservation of momentum and energy.
Weller  shows that compacting matter below the critical radius to form a black hole results in a violation of the conservation of momentum and energy.

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