- #1
diazdaiz
- 10
- 2
since i am new at learning special relativity, i still miss the concept about how thing move in special relativity. In high school, i am doing several problem about velocity addition, and that word always appear. for example:
A is moving with velocity vAO relative to O, and B is moving with velocity vBO relative to O, what is A velocity relative to B?
and then i am using formula
VAB=(VAO+VOB)/(1+VAO.VOB/c2)
and then you get the answer
but i can't really understand it. So i try to draw it
(in this image, i just draw object O and A (without B), so i can understand what VAO really mean)
(let say that A is traveling 0.5c from our viewpoint)
so, VAO will be 1/3 c because O see A only travel 1.5x108m after 1.5 second (or 3x108m after 3 second), is this what we say A is moving relative to O?
A is moving with velocity vAO relative to O, and B is moving with velocity vBO relative to O, what is A velocity relative to B?
and then i am using formula
VAB=(VAO+VOB)/(1+VAO.VOB/c2)
and then you get the answer
but i can't really understand it. So i try to draw it
(in this image, i just draw object O and A (without B), so i can understand what VAO really mean)
(let say that A is traveling 0.5c from our viewpoint)
so, VAO will be 1/3 c because O see A only travel 1.5x108m after 1.5 second (or 3x108m after 3 second), is this what we say A is moving relative to O?