Clash of moving bodies is inherent in all levels of the physical world - from subatomic particles to the cyclopean interplanetary and intergalactic phenomena.Therefore strike force, is a tremendous diversity, are so interested in physics.Unusual converting kinetic energy into potential type and back are observed when done perfectly elastic collision.The specifics of the dynamic interaction of two or more bodies lies in its transience and high intensity.
absolutely elastic collision with his unusual physical parameters of the exchange of energy is of great importance for construction work (eg piling) or during sports games, where it is beneficial.It also can carry a major risk, such as car accidents.Consequently, the problems of this phenomenon is important not only for theoretical physicists, but also for motorists, athletes, builders and designers.
absolutely elastic collision - the interaction of the colliding bodies in which their internal energy remains unchanged.Of course, in its pure form is a phenomenon in the world of macroscopic bodies never found.From the point of view of physics, absolutely elastic collision of the world around us is synonymous with the usual items perfect collision.But in some cases this physical perfection can be approached very close.Shadow perfect collision can be recorded, for example, at a time when there is a collision of bodies, such as billiard balls made of ivory or very hard plastic.
And realized perfectly elastic collision phenomenon can only be the collision of elementary particles, if any of the suitable conditions.This ability is due to the influence of quantum laws of the Universe at the microscopic level.The internal state and the corresponding indicator of the energy of each atomic particles are discrete (quantized).Therefore, after the collision, the particles can fly, will not change in their internal states.This clash will be completely elastic.
theory is that it will always be, as long as the energy of the colliding particles is not sufficient to transfer at least one of them in an excited state, which is in the quantum sense, characterized by a large measure of internal energy.Finally, and quite likely a case where the collision of two or more of the excited particles a reduction in their internal kinetic energy.In all such cases, appropriate to talk about the nature of inelastic collisions.
Strike absolutely elastic and inelastic bodies from the standpoint of physical science have fundamental differences.The second option for physicists is no less interesting, as this phenomenon is a loss of part or all of the energy under the influence of dissipative forces.When inelastic collision occurs the connection of two or more bodies, whereby they continue to move as a unit.A striking example is the bullet in a sandbox where it gets stuck and is already moving together with him.Another example with clay and clay balls, which usually stick together upon collision and form a single object.
In accordance with the same physical law formed the planets, including the Earth: cosmic dust particles collide and form larger object, and so "grows" to the size of the planet.True, there are also the laws of celestial mechanics, as well as many other principles, without which there would be no planets, and in outer space would fly some cold lifeless asteroids.An important part of this whole set of immutable and eternal laws of nature are transient dynamic interaction of bodies, in the language of physics called short-biting word "impact".This is a true act of creation of the world ...
