Why motion is absolute, and rest is relative

We say: motion is absolute and rest is relative. The key lies in the difference in frame of reference.

Here's an example:

We are standing on the highway, of course the composition of the highway is part of the earth (the reference), we are stationary relative to the earth, and the car running on the highway is moving relative to the earth. But the earth is in motion relative to the sun, and the cars we are standing on the earth and running on the road are moving relative to the sun. Of course, the solar system moves in the Milky Way.

From this simple example, we can see more clearly the relationship between the contradictory community of the unity of opposites of "motion and stillness".

Because there is nothing in the world that does not move, everything is in motion, from the planet to the atom and the electron. Therefore the rest is only a relative concept, for example, the house is stationary, but it is relative to the ground, relative to the universe, the house rotates with the earth, it is not absolutely stationary.

Because that's for the reference.

For example, if you sit in a moving car, you are moving relative to a building on the side of the road, and the speed of the movement is equal to the speed of the car, and you are stationary relative to the car. So, if you're chasing an object that's moving at 3 meters per second, you can see that you're not moving, and that object is moving at a speed of 3 meters per second.

It is necessary to look at the reference, in fact, every object is moving, and nothing is absolutely stationary, and stationary is the reference object, and the reference object can determine whether the object is stationary or not.

Motion is absolute and rest is relative, and the key lies in the difference in frame of reference.

Everything in the universe is in constant motion, and there is no absolutely stationary object. Usually, when we say that an object is moving or stationary, it is relative to another object (the reference object), and when describing the motion of the object, whether the reference object is mentioned or not, the reference object always exists, which is the objectivity of the reference object.

The choice of reference is arbitrary, and it is possible to choose an object that is stationary relative to the ground or an object that is in motion. For example, to study the motion of an object on the ground, the ground or an object at rest relative to the ground is usually selected as the reference.

Categories: Education, Science, >> Learning Aid.

Problem description: The teacher said that motion and rest are relative, and that motion is absolute and rest is relative. At first, I thought I knew very well, so I followed the teacher, but then I thought about it on my own, and the more I didn't understand. My classmates just passed it like this, but I just couldn't let it go.

Motion is absolute, which means that there will always be a reference in the universe that makes the object move relative to it. And the teacher said that rest is relative, which I don't understand, and there will always be a reference in this universe that makes the object rest relative to it. The most common street lamp, assuming that it is not changed in ten years, then one of the street lights should be stationary relative to the others in ten years, although it can be said that the other planets are moving for the largest range.

If motion is absolute, is there anything in the universe that is not static? There should still be a relativity in this, so it is not a precise and accurate statement to say that motion is absolute.

If you say that the street lamps will eventually be replaced, which is a very inappropriate statement, it is not the scope of the physical thinking of this concept, if you say so, the planet will not go one day without turning? But at that time, it could not be said that stillness was absolute, and motion was relative.

Analysis: In the final analysis, no object is absolute, it is all relative, it is just the length of time.