Impulse ... The concept is often used in physics.What is meant by this term?If you ask this question to the simple inhabitant, in most cases we were told that the momentum of the body - it is a certain impact (push or kick) exerted on the body, so that it is able to move in a given direction.Overall quite correct explanation.
Impulse body - determination with which we are confronted for the first time in school: the lesson of physics showed us how to roll down the inclined surface of a small truck, and faced such a metal ball.That's when we reasoned that may have an impact on the strength and duration of the physical phenomenon.From these observations and conclusions, and many years ago I was born the concept of the body as the pulse characteristics of the motion, directly dependent on the speed and mass of the object.
The term entered into science Frenchman Rene Descartes.It happened in the early XVII century.Scientists explain the momentum of the body not only as "the amount of traffic."In the words of Descartes himself, if one moving body collides with another, it loses so much of its energy as it gives another object.The potential of the body, according to physics, does not disappear, but simply transferred from one object to another.
main characteristic, which has the momentum of the body, is its focus.In other words, it is a vector quantity.It follows from this statement, and that every body in motion, has a definite momentum.
Formula influence of one object to another: p = mv, where v - velocity body (vector quantity), m - weight.
However, the momentum of the body - not only quantity that determines the move.Why one body, unlike the others, it does not lose a long time?
answer to this question has been the emergence of yet another notion - pulse power, which determines the amount and duration of exposure to the subject.It allows us to determine how the momentum of the body for a certain period of time.Impulse force is the product of the magnitude of exposure (actual power) for the duration of its application (time).
One of the most notable features of IT is its preservation in unchanged form, provided a closed system.In other words, in the absence of other influences on the two subjects, the momentum of the body between them will remain stable as long as you want.The principle of conservation can be taken into account in a situation where an external impact on the object is present, but the vector is 0. Also, the impact pulse is not changed even in the case when the effect of these forces or slightly acts on the body very short period of time (such as atshot).
It is this law of conservation of more than one hundred years, is haunted by the inventors, puzzled over the creation of the notorious "perpetual motion", as it was he who lies in the basis of such concepts as jet propulsion.
With regard to the application of knowledge about the phenomenon, as the momentum of the body, they are used in the development of missiles, weapons and new, if not eternal, mechanisms.
