All Questions
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Is frame of reference a point of view? [duplicate]
The definition of frame of reference I found is :"It is just a coordinate". But in solving problem, my teacher always uses frame of reference by considering it at rest (although it is moving)...
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4
votes
5
answers
711
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Can't understand a statement about motion
From the book where I am studying motion, It says
Motion is a combined property of the object under study and the observer. There is no meaning of rest or motion without the viewer.
I know that, for ...
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3
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If Earth accelerates, what reference frame is its acceleration relative to?
It should be a very fundamental thing, a very simple question. But there's something I want to understand.
We know that when we throw an apple vertically upwards, it experiences a force of gravity ...
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2
votes
2
answers
523
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Why can't we take space as universal frame of reference?
Suppose we have a ball filled half with water in space with nothing else around (nothing else in the whole space except the ball) and suddenly it accelerates for time t. obviously, there would be ...
1
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1
answer
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Special Relativity and Composition Law for Velocities with respect to an observer watching two objects moving away from a central point
So I understand that special relativity is all about the frame of reference and there is a lot to do with time dilation and how space-time is warped at velocities near $c$. So my question is what ...
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1
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Two Trains Relative Motion [closed]
I am confused about finding the solution to this relative motion problem:
You are on a train traveling east at speed of 20 m/s with respect to the ground. Your friend is sitting on another train ...
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5
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2k
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Can you tell your absolute speed in space?
Normally in relativity your speed can only be known relative to another object,
given that as one approaches light speed more energy is required to accelerate faster, based on the energy consumption ...
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0
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Is it possible to derive the Doppler effect formulas for sound using relative velocity?
Is it possible to derive the Doppler effect formulas for sound using relative velocity? If possible can anyone please explain it to me.
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In What Frame of Reference does the Special Theory of Relativity Operate? [duplicate]
Possible Duplicate:
Time Dilation - How does it know which Frame of Reference to age slower?
This has bugged me for years.
According to the theory of relativity, the faster an object moves, the ...
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