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Law of conservation of momentum

 
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Joined: 02 Jan 2007
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PostPosted: 12.03.2018 23:05    Post subject: Law of conservation of momentum Reply with quote

"Impulse is the change in momentum caused by a new force: this force will increase or decrease the momentum depending on the direction of the force; towards or away from the object that was moving before. If the new force (N) is going in the direction of the momentum of the object (x), the momentum of x will increase; therefore if N is going towards object x in the opposite direction, x will slow down and its momentum will decrease.

Law of conservation of momentum Edit
In understanding conservation of momentum, the direction of the momentum is important. Momentum in a system is added up using vector addition. Under the rules of vector addition, adding a certain amount of momentum together with the same amount of momentum going in the opposite direction gives a total momentum of zero.

For instance, when a gun is fired, a small mass (the bullet) moves at a high speed in one direction. A larger mass (the gun) moves in the opposite direction at a much slower speed. The momentum of the bullet and the momentum of the gun are exactly equal in size but opposite in direction. Using vector addition to add the momentum of the bullet to the momentum of the gun (equal in size but opposite in direction) gives a total system momentum of zero. The momentum of the gun-bullet system has been conserved."

https://simple.m.wikipedia.org/wiki/Momentum

For instance, when a quark is fired, a small mass (the gluon) moves at a high speed in one direction. A larger mass (the quark) moves in the opposite direction at a much slower speed.

Well, what happening for other quark when gluon collide with that?

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