Doubt about relativity

  • #1

Main Question or Discussion Point

Doubt about relativity!!

I am a noob! Forgive me if it sounds too stupid!

Let me say, I am in CERN right now at the LHC.
I fire a proton at 0.9c in one direction. While this happens, I also fire another proton at 0.5c in the opposite direction. Both the measurements were done considering the lab as a reference frame.

The problem is, what's the speed(or velocity) of either proton relative to one another??
 

Answers and Replies

  • #2
Pengwuino
Gold Member
4,989
14


It will be given by [itex]v' = {{v_1 + v_2}\over{1+{{v_1v_2}\over{c^2}}}}[/itex]

Numerically either proton will see the other shoot off at .966c

Formally you consider one of the proton's rest frame and send the lab traveling off at 0.9c/0.5c and then the other proton is shot off at 0.5c/0.9c from the lab frame.
 

Related Threads for: Doubt about relativity

  • Last Post
7
Replies
157
Views
16K
  • Last Post
Replies
21
Views
3K
  • Last Post
2
Replies
46
Views
3K
  • Last Post
2
Replies
48
Views
3K
  • Last Post
Replies
4
Views
2K
  • Last Post
6
Replies
127
Views
10K
  • Last Post
Replies
13
Views
926
Replies
19
Views
2K
Top