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According to the law of conservation of momentum which states that in a closed system momentum before collision is equal to the momentum after collision.
momentum
Conservation of Momentum:The total momentum in a closed or isolated system remains constant. If the two trains are moving as one after the collision, and were the same mass M each, the total momentum before and after the collision would be the same, ccording to the law. Before the collision, the momentum (velocity times mass) was 10 x M units (one train) which must now be the same but applied to two trains (2M) moving as one body. The Conservation of Momentum rule, will tell you that the new moving body, being twice the mass, would be moving half the velocity to conserve the momentum from before the collision.
In a closed system, the TOTAL initial momentum before an "event" is the same as the TOTAL final momentum (at the end).
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.
According to the law of conservation of momentum which states that in a closed system momentum before collision is equal to the momentum after collision.
momentum
Conservation of Momentum:The total momentum in a closed or isolated system remains constant. If the two trains are moving as one after the collision, and were the same mass M each, the total momentum before and after the collision would be the same, ccording to the law. Before the collision, the momentum (velocity times mass) was 10 x M units (one train) which must now be the same but applied to two trains (2M) moving as one body. The Conservation of Momentum rule, will tell you that the new moving body, being twice the mass, would be moving half the velocity to conserve the momentum from before the collision.
In a closed system, the TOTAL initial momentum before an "event" is the same as the TOTAL final momentum (at the end).
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.
Total momentum in an isolated system does not change.the law of physics that states that the linear momentum does not change unless an external force acts upon itThe law of conservation of momentum explains that momentum is neither lost or gained."when two bodies collide with one another, the total energy remains constant"I COULDN'T SAY IT BETTER!That means that the total amount of momentum doesn't change. This is relevant, for example, in a collision or Newton's Cradle. (5 balls hanging on a string, when you move one to hit the other balls, there is a reaction.)"In closed system,when two bodies colloid,the total momentum before collision is equal to the total momentum after collision".A B. A. B. A. B->. ->. -> ->. ->. ->⊙ ⊙ ⊙⊙ ⊙ ⊙Consider two bodies A and B of masses m1 and m2 moving with velocities u1 and u2 respectively along the same direction.let the bodies colloid for 't' secs.During the collision A exerts a force F1 on B ans B exerts an equal and opposite force F2 on A. After collision A Moves with a velocity V2.Applying newtons second law motion ,the force exerted by the boo body B is:F1=mass of B (acceleration of B)(v2-u2)F1=m2(----------).......1tSimilarly force exerted by the body B on A is:F1= mass of A (acceleration of A)(V1-u1)F2= m1(-----------) . ........2TWhat is neat about momentum is that even if the collision is not elastic, so that kinetic energy is lost to heat, etc., the momentum is yet preserved!
In a closed system with no external forces acting upon it, the momentum of the system is constant.
In an elastic collision, all initial kinetic energy is fully restored as final kinetic energy. where nothing is converted into noise, heat or any other form of energy. In an inelastic collision, kinetic energy is "lost" to thermal or sound energy.
The conclusion for a lab about the conservation of linear momentum is exactly that. Linear momentum is conserved. Momentum p = m*v is a product of mass and velocity. The larger the mass or faster the velocity, the higher the momentum. It takes prolonged force to stop it. Also, if a closed system exists that is not affected by dissipative forces, the total momentum of the system will remain. In a collision between two objects, momentum is conserved.
A closed system
If the two bodies form a closed and isolated system (that is no other external forces act on the system apart from the forces that the bodies exert on each other and no mass is allowed to enter or leave the system), the principle of conservation of momentum SHOULD be used. Remember: As long as the condition in the brackets above hold, the principle of conservation of momentum holds. Next, depending on the nature of the collision, another conservation law can be used. If the collision is perfectly elastic, then kinetic energy is conserved. Note that although kinetic energy is not always conserved, TOTAL energy is ALWAYS conserved. You could still apply the principle of conservation of energy for an inelastic collision provided you knew the amount of energy converted to other forms of energy.
An angular momentum is the vector product which describes the rotary inertia of a system around its axis and is conserved in a closed system.