2006-08-26 04:25:49 · 8 answers · asked by goring 6 in Science & Mathematics ➔ Physics
Did Einstein have different definiton of motion compared to Newton?
2006-08-26 05:06:50 · update #1
Is there really any thing in the Universe at rest?
2006-08-26 05:07:45 · update #2
Per Einstein =motion real only in proper frame and proper time?
2006-08-26 09:22:32 · update #3
in simple motion is movement of an object in relation to its surroundings.
NO einstein did not have seperate definition of motion
NO there is no object in Universe which is at rest
2006-08-26 06:18:10 · answer #1 · answered by Prakash 4 · 0⤊ 0⤋
Good answers.
To your first question, motion is the change of distance between two objects... If you have an object in a "sterile" field with no objects to compare it to, and it moves, then it still moves with reference to the edges of that field.
To the second, theoretically yes... there is a body at rest in the universe... most likely a supermassive black hole, around which everything revolves. But this is highly debated and even IF such a body exists, it probably isn't completely at rest, but still "shivers" a bit with the rotation of the rest of the universe.
-Daniel
2006-08-26 12:42:53 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Motion is defined as when your position in space changes with time in a given reference frame. It therefore depends on your reference frame. That basic definition does not change in relativity. However, the momentum and kinetic energy of an object vs. the time rate of change of position (aka velocity), and how one transforms the coordinates that measure position and time when going from one reference frame to another is significantly different. Anyway, here are some good keywords to google for more details: space, time, reference frame, Lorentz Transformation, spacetime.
2006-08-26 12:42:24 · answer #3 · answered by Dr. R 7 · 0⤊ 1⤋
According to Newtonian physics, motion is the following equation:
Motion = change in distance
2006-08-26 11:34:44 · answer #4 · answered by eric l 6 · 0⤊ 1⤋
motion is the relative change in position.it is a relative term that is, it is always defined with some or the other reference and cant be defined it independently.it is the change is position with respect to another object or reference frame.
2006-08-26 11:38:54 · answer #5 · answered by Anonymous · 0⤊ 1⤋
when a body loses its state of rest, then the body is said to be in motion.
2006-08-26 11:40:07 · answer #6 · answered by Mikhil M 2 · 0⤊ 1⤋
it is the change of position ,location at any direction in TIME.
2006-08-26 11:34:16 · answer #7 · answered by wispercall 1 · 0⤊ 1⤋
try
2006-08-26 11:28:23 · answer #8 · answered by dianed33 5 · 0⤊ 1⤋