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What does it means to say that momentum or any quantity is conserved?
Wiki User
∙ 11y ago
In a closed system, the TOTAL initial momentum before an "event" is the same as the TOTAL final momentum (at the end).
Manley Wehner
Wiki User
∙ 14y agoThe total momentum of a closed system of objects is constant. No matter where objects go, the momentum stays the same, along with the mass and energy. Nothing depends on location. (This is as long as there are no external forces affecting the system).
Wiki User
∙ 13y ago"What it means to say that momentum is conserved is that momentum is the same before and after the collison." Or this is more correct: "In an isolated system (i.e. provided no external force acts), the total momentum of the system remains constant."
MV before collision is equal to MV after the collision. The product of the mass and velocity of the objects before they collide is equal to the product of the mass and velocity of the objects after they collide. In an elastic collision this is easy to measure, in an inelastic collision some energy is lost to heat, sound, etc.
Wiki User
∙ 9y agoThe conservation of momentum states that in an isolated system, the momentum of two colliding objects is the same before and after the collision. The momentum gained by one object is the momentum lost by the other object.
Wiki User
∙ 13y agomomentum is conserved means that the force used to create the momentum is never lost in the first place... it is simply transferred from one object to another (through contact), and this momentum is thus "conserved"
Wiki User
∙ 12y agoIt mean that when two bodies collide in an closed or isolated environment(where there is no external agent) there is no net change in the products on thier masses and thier velocity before and after collision.
It describes the fact that when two bodies collide in an isolated or closed system(where there is not physical agent)there is no net change in the product of thier masses and their velocities before and after collisions.
Wiki User
∙ 11y agoIt means that the total amount of a certain quantity doesn't change over time. Here is an example, for the case of momentum:
A car with a mass of 1000 kg moves to the right, at 10 meter/second, and crashes into another car that is initially standing still, and which also has a mass of 1000 kg.
The total momentum before the crash is (1000 kg x 10 meter/second) + (1000 kg x 0 meter/second) = 10,000 kg x m/s (to the right).
The total momentum after the crash must be the same as before the momentum, so the cars (which are assumed to stick together after the crash) have a speed of 5 meter/second (which results in a momentum of 2000 kg x 5 meter/second = 10,000 kg x m/s to the right). (Eventually, momentum will be transferred to planet Earth.)
Wiki User
∙ 9y agoIn a closed system, the TOTAL initial momentum before an "event" is the same as the TOTAL final momentum (at the end).
Celina Gonzalez
What does she mean when she says "the momentum is conserved?"
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What is the theory of momentum?
The idea is that there is a quantity, "amount of movement", formally the product of mass x velocity, that is conserved. That means that the total momentum doesn't change, even if two objects collide, for example - any momentum lost by one object is gained by the other object.
Does momentum conserved during collisions?
Energy, if collision is rigid, total momentum is a constant also.
The collision between two helium atoms is perfectly elastic so that momentum is conserved?
Momentum is always conserved in any type of collision. Energy conservation, however, is dependant on elasticity. In a perfectly elastic collision all energy is conserved.
Give two examples showing the conservation of momentum give one example where momentum is not conserved?
Momentum like mass will always be conserved in any process. Momentum is the product of mass and velocity of the object. It is symbolically denoted as p=m*v where p = momentum, m = mass and v = velocity
What is the Law of convesation of momentum?
That means that a quantity, called "momentum", can be defined, and that this quantity does not change over time. In any collision, for example, the momentum (which is defined as mass x velocity) of individual objects can change, but the total momentum does not change. Please note that since velocity is a vector quantity, momentum is also a vector quantity.
What is the theory of momentum?
The idea is that there is a quantity, "amount of movement", formally the product of mass x velocity, that is conserved. That means that the total momentum doesn't change, even if two objects collide, for example - any momentum lost by one object is gained by the other object.
Is momentum conserved in a perfectly inelastic collision?
In any physical process, momentum will always be conserved. Momentum is given by p = m*v. There is also something called law of conservation of momentum.
Does momentum conserved during collisions?
Energy, if collision is rigid, total momentum is a constant also.
The collision between two helium atoms is perfectly elastic so that momentum is conserved?
Momentum is always conserved in any type of collision. Energy conservation, however, is dependant on elasticity. In a perfectly elastic collision all energy is conserved.
Give two examples showing the conservation of momentum give one example where momentum is not conserved?
Momentum like mass will always be conserved in any process. Momentum is the product of mass and velocity of the object. It is symbolically denoted as p=m*v where p = momentum, m = mass and v = velocity
What is the Law of convesation of momentum?
That means that a quantity, called "momentum", can be defined, and that this quantity does not change over time. In any collision, for example, the momentum (which is defined as mass x velocity) of individual objects can change, but the total momentum does not change. Please note that since velocity is a vector quantity, momentum is also a vector quantity.
What does it meanto say that momentum is conserved?
Momentum is the product of mass times velocity. The sum of (momentum x velocity) for all parts of a closed system remains constant. For instance, if two balls collide, any momentum lost by one is gained by the other (transferred to the other). Energy is NOT necessarily conserved (kinetic energy, to be more precise - any energy lost will be converted into heat, usually), so momentum is sometimes more useful for certain calculations.
Why in a collision momentum is not always conserved?
In principle momentum is always conserved. However what sometimes happens in a collision is that energy is released that is then no longer considered part of the system. For example if two cars collide energy could be dissipated via the air and ground (e.g. heat) and this can also carry away momentum. Often, these effects are not taken into account and in that way momentum conservation appears to be violated; but if one takes care and takes into account all collision products the total momentum after is equal to the total momentum prior. So in short, any violation can be traced back to a redefinition of the system.
Conservation of linear momentum exp?
Linear momentum is mass times velocity. For a single point object, momentum is conserved, because the object will continue to move at a constant velocity. Nor will its mass change either. For a group of objects, too: When momentum is transferred, for example during a collision, any momentum lost by one object is gained by another. The total momentum remains constant.
Is momentum a scalar quality?
A vector quantity is one which transforms like the coordinates. In other words, if a coordinate system is transformed by an operator , any vector quantity in the old coordinate system can be transformed to its equivalent in the new system by the same operator. An example of a vector quantity is displacement (r). If displacement is a vector, the rate of change of displacement (dr/dt) or the velocity is also a vector. The mass of an object (M) is a scalar quantity. Multiplying a vector by a scalar yields a vector. So momentum, which is the mass multiplied by velocity, is also a vector. Momentum too transforms like the coordinates, much like any other vector. The definition of a vector as a quantity having "magnitude and direction" is simply wrong. For example, electric current has "magnitude and direction", but is a scalar and not a vector.
In order to increase momentum we must increase either the object's?
Momentum is the product of velocity x speed, so you can increase any of the two. Please note that velocity, and therefore also momentum, are vector quantities.
What are the examples for vector quantities?
A vector quantity is any quantity in which a direction is relevant. Some examples include position, velocity, acceleration, force, momentum, rotational momentum (the vector is defined to point in the direction of the axis in this case), torque, etc.
