deletions | additions       diff --git a/introduction.tex b/introduction.tex  index ffd0332..6c747e5 100644  --- a/introduction.tex  +++ b/introduction.tex 
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$F = \frac{2m * \displaystyle\sum\limits_{0}^n v}{\Delta t}$  Where $n$ is the number of collisions and $v$ is the velocity of the particle hitting the wall. Since the change in velocity is double the initial velocity, the 2 can be placed outside the summation along with the mass.