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Motion movement and changes
Terrestrial navigation is the method used by mariners that uses landmarks as reference points.
Very interesting question!No object in the solar system is stationary with respect to any other object. We knowthat you're looking for "the sun" as an answer, but what kind of explanation can take usthere ? How can we describe it ?Let's say that if you take the average position of every object in the solar system,over the course of many hundreds of years and with respect to the distant "fixed"stars, those points are all bunched together in the region of space where the sunresides.That's the best I can do, while feeling relatively honest about it.
1. Birds 2. People Walking 3. Cars 4. Bugs 5. Clock hands 6. Livestock
The basic reference point in astronomy is a direction defined by the intersection of the plane of the Earth's orbit with the plane of the Equator. It is called the First Point of Aries and the Sun is near that point around March 21. Unfortunately the First Point of Aries drifts slowly because of precession, so star maps have to be updated every 50 years and the First Point of Aries is not even in the constellation of Aries any more. Bright stars are also used as reference points.
Motion movement and changes
A reference point is anything that is stationary. So, if you are on a train you know you have left the station because you moved away from the platform. Hence the platform was stationary.
North Pole, South Pole, and the zero-zero point (where the equator passes through the Greenwhich Meridian.)
To help you state how the reference point placement is and how the object is moved from the reference point
motion occurs when an object changes its position relative to a reference point.
To support you in specifying how the reference point is placed and how the object is moved away from the reference point.
A person standing on the ground. For the person on the train, ground is moving and the train is stationary.
L points also known as Lagragian points, Libration points and Lagrance points. the L points are the five positions in an orbital configuration where a small object affected only by gravity can theoretically be stationary relative to two larger objects (such as a satellite with respect to the Earth and Moon).
the person standing on the ground, the train is moving and the ground is stationary. but the person on the train looks he is stationary and the ground is moving.
Distance is measured using reference points therefore distance, between objects, is relative. Some of the units used can be absolute, the separation between two or more points cannot.
In our everyday lives, there is really no big difference between 'distance' and 'relative distance.' However, you must realize that EVERY measurement is relative. Consider this: You're on a moving train. A track parallel to you on the left is moving with your train at the same speed. Say it's really foggy and you can't make out any ground reference points other than the other train. You see no movement. That's because the relative speed between your train and the other train is close to zero. Main idea: All measurements have reference points. Relative distance isn't much different. It's just the distance of one object compared to the reference point, which is really just simply 'distance'.
If the reference points are not correct, the location of any coordinate will be incorrect.