All Questions
8
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1
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78
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Calculating relative velocity: What am I doing wrong? [closed]
There are two objects A and B. Points P1, P2, P3 are in the same line, and P2 is exactly at the middle of P1 and P3
Suppose B is moving at constant velocity along the line P1 to P3. Thus, time taken ...
- 141
0
votes
1
answer
61
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Momentum conservation of a rocket [closed]
I am trying to solve a relativistic rocket equation. The rocket dumbes fuel $N$ times, in the $-x$ direction, with a mass of $\varepsilon m_0$, where $m_0$ is the rest mass of the rocket. The rocket ...
- 3,122
-1
votes
2
answers
61
views
Relativity: moving space shuttles [closed]
Two space shuttles $A$ and $B$ are moving in opposite directions. A person on Earth measures $v_A = 0,75 c$ and $v_B = -0,85 c$. What is the velocity of $B$ relative to $A$ (= $v_{BA}$)?
So my first ...
- 265
0
votes
1
answer
56
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Rotationated inertial frames and Galileo Relativity
Consider then a inertial frame $S$ and another one, $S'$.
The inertial frame $S'$ is at uniform motion with respect to $S$.
Both inertial frames are the Euclidian vector spaces $\mathbb{E}^3$ equipped ...
- 3,085
0
votes
0
answers
1k
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Relativity of simultaneity - under what conditions would two events happen simultaneously for frames $S$ and $S'$ when $S'$ is moving relative to $S$?
I feel like I have a fundamental confusion with the following exercise:
I'm confident with my answer in (a), which is that $B$ must be within the light cone of $A$, or that $B$ is causally connected ...
- 3,200
1
vote
1
answer
143
views
The Ultimate Grand Race: Will the photon cross the alpha particle?
Question:
There are $2$ points A and B, separated by a distance of $10$ light years. Suppose we have a light source at point A. An alpha particle is moving away from A at a speed of $0.99c$. As ...
- 4,954
2
votes
2
answers
1k
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Motion of uniform accelerating rocket in special relativity
I have been trying to learn more about acceleration in special relativity. For the purpose I consulted the great Lev Landau. He has an example about this in his book but one of his equations puzzles ...
- 1,210
1
vote
2
answers
342
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Velocity of approach of a beam of light and a moving object
I came across a problem on Brian Greene's course on Special Relativity.
(http://www.worldscienceu.com/courses/6/elements/TnRUSU)
From George's perspective, how fast does a beam of light approach ...
- 777