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

Velocities of objects moving towards and away from each other

  1. Dec 13, 2013 #1
    Am I correct in my understanding that two objects moving away from each other movee away from each other at the speed designated by this equation: (V1+V2)/((1+((V1*VS)/(C^2)))) I was wondering if this same equation was used to determine the velocity at which two objects move towards each other as well. It seems like it would be the same, but then again, I would think that the combined velocity of 2 objects would just be V1+V2, so I'm just being careful.
  2. jcsd
  3. Dec 13, 2013 #2


    User Avatar
    Gold Member

    Yes, you are correct with the equation.

    Given that nothing can exceed the speed of light it is not possible for the combined velocity of two objects to be V1 + V2
  4. Dec 13, 2013 #3
    Alright sweet, thanks
  5. Dec 14, 2013 #4
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook