Inertia is a principle of physics, also known as the Newton's First Law. And the ability to resist change of movement.
The law of inertia says that if a body is moving in one direction, it tends to stay on that path at the same speed. If it is found stationary, unless it is subjected to some force, it remains stationary.
THE Theory of relativity, by Albert Einstein, will also use the concept of inertia to establish the idea of an inertial frame of reference, about the movement of a body in a vacuum.
In addition to physics, the Chemistry it also uses the concept of inertia to talk about the resistance of some materials to react with others. As noble gases, for example, considered inert, that is, they do not react chemically.
Also know the meaning of inert.
At the Right, there is also the Principle of Inertia, ensured by Article 2O of the Code of Civil Procedure (CPC). It is also called the principle of demand and talks about the need for initiative on the part of the party in manifesting its right to action so that there is an official impulse on the part of the judge.
The word inertia in the figurative sense corresponds to the ability of someone or something to remain in the same situation, as in the example:
"After the separation, he went into a state of inertia. He goes from work to home and from home to work, just staying alive."
The origin of the term inertia comes from the Latin iners, which means unprepared. The word is formed by the parts in, which means no, and ars, related to preparation, the ability to do.
Between the synonyms from inertia are apathy, stagnation, inactivity, lethargy, immobility, stagnation, discouragement, prostration, indifference, coldness and insensitivity.
law of inertia
The Law of Inertia, or Newton's First Law, is part of a set of laws of mechanics established by Isaac Newton.
For Newton, the Law of Inertia establishes the resistance to acceleration offered by matter. Inertia being the property that a body has to remain at rest or in uniform straight motion (MRU).
Newton's Law also says that the greater the mass of matter, the greater its tendency to inertia. That is, the heavier it is, the more likely it is to remain motionless or in the same motion.
There is no formula for the Law of Inertia, only the one announced determining the material's capacity to remain inert under these circumstances.
There are still two more Newton's Laws. THE Newton's second law, or Fundamental Principle of Dynamics, represented by the formula: F = m.a.
And the Newton's Third Law, the Law of Action and Reaction, also without formulas but corresponding to the idea that every action force has a corresponding reaction force.
Examples of Inertia
In physics, there are many practical examples of how inertia occurs. A bus full of passengers, whether sitting or standing, stops abruptly and causes them to throw their bodies forward. This is inertia, the continuity of the body's movement in the direction the bus was traveling.
The same happens in a passenger car, which is at a certain speed and suddenly collides with another car in front. The tendency is for the bodies inside the car to move forward, maintaining trajectory and speed. This is why wearing a seat belt is so important to avoid sudden movements and more serious accidents, such as flying out of the windshield.
Rockets take advantage of the law of inertia in vacuum, in space, to continue their movement without the use of thrusters.
