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!

Relativistic Momentum help

  1. May 20, 2015 #1
    1. The problem statement, all variables and given/known data
    If a mass of 1 kg has a velocity of 0.7c, what is the relativistic momentum?

    2. Relevant equations
    I dont know what equation to use....


    Please help..
     
  2. jcsd
  3. May 20, 2015 #2

    Bandersnatch

    User Avatar
    Science Advisor

    Start by writing down the equation for the regular, non-relativistic momentum.

    Do you know any relativistic equations for any of the values making up the momentum equation?
     
  4. May 21, 2015 #3
    Relativistic momentum on 4D Minkowski space have 4 coordinates.
    $$p_i=mv_i,\,p_{ct} = mc$$
    Consevation for this momentoum:
    $$ \Delta{x}^2+\Delta{y}^2+\Delta{z}^2-c^2\Delta{t}^2=\text{const}$$
    give:
    $$m=\frac{m_0}{\sqrt{1-(v/c)^2}}$$
    where m0 is the mass for its own frame.
     
  5. May 25, 2015 #4
    No, haha... I am terrible at physics...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Relativistic Momentum help
  1. Relativistic momentum (Replies: 2)

  2. Relativistic Momentum (Replies: 2)

  3. Relativistic Momentum (Replies: 1)

Loading...