What causes Newton's laws of motion
Newton's laws are one of the foundations of physics. In the following we explain what the three laws of Isaac Newton are all about.
Before we get into Newton's Laws, you should read the following headings. If these topics seem unfamiliar to you, be sure to read them up. Without this knowledge, you may have problems understanding this article.Show:
1. Newton's law
Everyone knows from everyday experiences that you have to use a force to change the state of motion of a body. For example, if you want to transport an object to another room, you have to use strength to do so. For example, an acceleration must be carried out in the initial phase in order to pick up the object. And a force must also act when there is a change in direction. The English physicist Isaac Newton, who lived from 1643 to 1727, already established this. His knowledge went down in history as that Newton's Laws and apply to the total force. The first of these was called the Law of Inertia. This says:
Every body maintains its speed in terms of magnitude and direction as long as it is not forced by external forces to change its state of motion.
You can find out more about the law of inertia in a separate article. Continue to the article law of inertia.Show:
2. Newton's law
Newton's 2nd law establishes a connection between the physical quantities force, acceleration and mass. The formula looks like this:
- F = m * a
- "F" is the force in Newtons [N]
- "m" is the mass of the body in kilograms [kg]
- "a" is the acceleration in meters per second square [m / s2 ]
Further information on Newton's 2nd law can be found in a separate article. Continue to the article Force / Forces according to Newton.
3. Newton's law
We come to Newton's 3rd law: Forces between bodies do not occur individually, but in pairs. For example, if a person wants to accelerate a car, that person has to exert a force. The car counteracts this force, the person feels resistance. It is called a counterforce. The English physicist Isaac Newton, who lived from 1643 - 1727, already established this. His knowledge went down in history as Newton's Laws. One of them was called the law of interaction. This says:
If a body A acts on a body B with the force F, then the body B acts on the body A with an equally large force. However, the directions of the two forces are opposite.
Further information on Newton's 3rd law can be found in a separate article. Go to article interaction law.
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