1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Relativity and K_0 Meson decay

  1. May 21, 2008 #1


    User Avatar

    1. The problem statement, all variables and given/known data

    A [tex] k^0 [/tex] meson at rest decays into a [tex] \pi^+ [/tex] meson and a [tex] \pi^- [/tex] meson, each having a speed 0f 0.85c. If the [tex] k^0 [/tex] Meson is travelling at 0.9c decays, what is the :

    (i) The greatest speed that one of the [tex] \pi [/tex] mesons can have

    (i) What is the least speed?

    2. Relevant equations

    [tex] \gamma = \frac{1}{\sqrt{1-\frac{v^2}{c^2}}} [/tex]

    [tex] v= v_0 \gamma [/tex]

    3. The attempt at a solution

    I am not quite sure what to do. If it was just find a speed, I would use the Lorentz Equation for speed diffference given above (I think this is the relevant equation). but since they want a max. and a min. speed, I am not quite sure.

    Any ideas would be most appreciated,

  2. jcsd
  3. May 21, 2008 #2
    Hey TFM,

    Take a look at my post, 'Special relativity velocity tansforms', I misspelt transforms in the post name. Ooops, :redface:.

  4. May 21, 2008 #3


    User Avatar

    Yeah, I did see that, but thanks anyway,

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook