# 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 ?
As is noted by authors of , "only the conservation of momentum and the uniform motion of the center of mass-energy are used, and it is difficult to see how any components of our derivation could seriously be open to question" Indeed, (4) derived for the pulse where [tau] [much less than] T is not open to question.
The conservation of momentum equation includes the gravitational and pressure forces that are considered in the CONTAM model but also adds frictional forces, buoyancy forces, and forces due to changes in momentum that are absent in the CONTAM model.
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.
When the thickness of a flow field is small compared to other dimensions and the flow is nearly parallel, the conservation of momentum equations simplify into a single equation with pressure P as the unknown.
Continuity and the conservation of momentum and energy equations form the basis of these algorithms.
Let's take the law of conservation of momentum, which probably is a serious contender for the status of fundamental law.
The conservation of momentum - that a moving object will continue moving at the same speed and in the same direction forever until resisted, pushed, deflected, or subjected to friction - has become obvious, but because it couldn't be observed anywhere in the universe until space flight became possible, its becoming obvious required laboratory experiment and intellectual struggle.
This is called the law of conservation of momentum.
Here, in the context of flyby anomaly, the rule--perhaps at stake--is conservation of momentum. It is a corner stone of physics, whence the flyby anomaly is worth attention.
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.
Armed with the facts, the engineer performed a speed and force analysis based on the principles of conservation of momentum and of energy, two fundamental principles at work in a vehicle dynamics analysis.

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