The most common frame of reference is the observer himself and, by extension, the
room, lab, neighborhood, or environment in which he feels himself to be at rest.
Earth.
Earth is the most common frame of reference.
Motion is relative to your frame of reference which you can choose arbitrarily. Most people use the surface of the earth as their frame of reference or their own body depending on the calcualtion they are doing. However, that makes describing the orbits of the planets more difficult so the sun is often used as the frame of reference in that case. If I'm inside a car my frame of reference might be my head, the car or I could choose a spot along the road (the surface of the earth). From a science standpoint you should get the same answer no matter what frame of reference you arbitrarily choose but it often turns out that choosing a particular frame of reference makes certain calculations much easier. Just keep in mind that motion is always relative to something and you get to pick whatever that something is when you are solving a problem or doing a calculation. Just don't change frames of reference in the middle of a problem or your answer will likely be incorrect.
It depends on how you frame the question. Everyone's subjective frame is the same, but your frame of reference is different in relation to mine unless we share the same motion in very close proximity to each other. At non-relativistic speeds, the differences are so small as to be inconsequential, but they are calculable if you don't mind a boxcar load of decimal places. For the sake of convenience and for most purposes, we generally take our locale on the surface of the earth as a single static frame of reference.
The north star is the most common reference point.
Earth.
Earth is the most common frame of reference.
Earth is the most common frame of reference.
Earth's surface is a common reference point for detecting motion.
Earth's surface is a common reference point for determining position and motion.
Motion is relative to your frame of reference which you can choose arbitrarily. Most people use the surface of the earth as their frame of reference or their own body depending on the calcualtion they are doing. However, that makes describing the orbits of the planets more difficult so the sun is often used as the frame of reference in that case. If I'm inside a car my frame of reference might be my head, the car or I could choose a spot along the road (the surface of the earth). From a science standpoint you should get the same answer no matter what frame of reference you arbitrarily choose but it often turns out that choosing a particular frame of reference makes certain calculations much easier. Just keep in mind that motion is always relative to something and you get to pick whatever that something is when you are solving a problem or doing a calculation. Just don't change frames of reference in the middle of a problem or your answer will likely be incorrect.
In general, you can use whatever frame of reference is most convenient for the calculations you want to do.
It depends on how you frame the question. Everyone's subjective frame is the same, but your frame of reference is different in relation to mine unless we share the same motion in very close proximity to each other. At non-relativistic speeds, the differences are so small as to be inconsequential, but they are calculable if you don't mind a boxcar load of decimal places. For the sake of convenience and for most purposes, we generally take our locale on the surface of the earth as a single static frame of reference.
The north star is the most common reference point.
The most common picture frame size would be the 8x10.
micromotion is the most refined technique for the analysis of an existing work center. videotapes or motion pictures and using frame-by-frame are used to uncover every possible opportunity for improvement.
micromotion is the most refined technique for the analysis of an existing work center. videotapes or motion pictures and using frame-by-frame are used to uncover every possible opportunity for improvement.