1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Question about relativistic motion

  1. Sep 3, 2008 #1
    I have this question .

    There are two bodies in space . Each are moving with a speed of C/2 towards each other . What is the relative speed of one body with respect to the other .

    According to classical view it has to be C but in real it doesnt can any1 tell me how to find the answer .:rolleyes:
     
  2. jcsd
  3. Sep 3, 2008 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

  4. Sep 4, 2008 #3
    u' = (u1 + v1)/(1 - u1*v1/c^2) where u1, v1 are velocities... this reduces to u' = u1 + v1 classically. substitute u1 = c/2, u2 = c/2, etc. and you have your answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?