Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

General Case of Relative Velocities

  1. Dec 25, 2014 #1
    I was looking relative velocities and I saw General case in Relativity part.That part means every direction isnt it.
    http://en.wikipedia.org/wiki/Relative_velocity
    and in there B is the observer or A is the observer
    Thanks
     
  2. jcsd
  3. Dec 25, 2014 #2
    With respect to the general case of velocity addition in the wiki, there appears to be a (typo) in the formula.

    I see two vectors (velocity A and velocity B) side by side in the denominator of the fraction. Most likely this is a dot product but there is no dot between them.

    Yes? No?
     
  4. Dec 25, 2014 #3

    PeterDonis

    User Avatar
    2016 Award

    Staff: Mentor

    ##\vec{v}_{BA}## is the velocity of B in the rest frame of A, which needs to be calculated; ##\vec{v}_A## and ##\vec{v}_B## are the velocities of A and B in some other frame, which are presumed to be known at the start of the calculation.

    Yes, there should be a dot between them.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: General Case of Relative Velocities
  1. General Relativity (Replies: 6)

  2. General Relativity (Replies: 8)

Loading...