All Questions
4
questions
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If a car ahead of me suddenly speeds up close to the speed of light, what would I and the car observe each of us? [closed]
Suppose I and the car is beside each other and the car went a little ahead of me, then instantly speeds up close to the speed of light. Will I observe the car is going too slow or stuck at one place ...
- 21
0
votes
1
answer
90
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How could time move "slower" for some observer-A moving "faster" than another observer-B when velocity is relative? [closed]
I've never understood how time dilation due to speed works. Take the most well-known example of an astronaut orbiting around the earth at insane speed for a while and then returning to earth having ...
- 101
-1
votes
1
answer
138
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With respect to what time is calculated in space
I have read that time appears to move slower near massive objects because the object's gravitational force bends space-time. The phenomenon is called gravitational time dilation, i.e., time moves ...
- 109
3
votes
2
answers
377
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Distance between events at relativistic speeds
The problem: A spaceship is travelling between Mountain $A$ and Mountain $B$, both of which erupt simultaneously as recorded by a scientist on the ground. The mountains are $300 \; \text{km}$ apart on ...
- 221