• Support PF! Buy your school textbooks, materials and every day products Here!

A question about relativity

  • Thread starter wowolala
  • Start date
24
0
1. Homework Statement

A Vorlon vessel traveling at a speed of 0.975c passes by the Babylon 5 space station( engineers that designed the station quote its length at 8.0645km).

A Starfury is released from the space station moving with a speed of 0.2c towards the incoming Vorlon vessel.

What is the observed size of Babylon 5 space station for all observers involved?


for " observed size", does it mean the length of space station...

how can i do the addtion in relativistic situation?

thx, i need help from you guys


thx so much
 

Answers and Replies

Doc Al
Mentor
44,827
1,083
24
0
V1+V2=(V1+V2)/(1+V1*V2/c^2)

do we need to use this formula

V stands for speed
 
Doc Al
Mentor
44,827
1,083
You'd need that formula for relativistic addition of velocity if you wanted to find the relative velocity of the Vorlon vessel and the Starfury. But that's not relevant here.

Since you're asked to find the observed size of the space station, you need the speed of the observers relative to the space station.
 

Related Threads for: A question about relativity

  • Last Post
Replies
4
Views
647
  • Last Post
Replies
2
Views
1K
  • Last Post
Replies
13
Views
553
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
1
Views
764
  • Last Post
Replies
1
Views
558
Replies
8
Views
603
Replies
5
Views
1K
Top