1 \begin{problem*}{9.V13}
2 A proton (rest energy $938\U{MeV}$) moving with velocity $v$ has a
3 total energy of $1173\U{MeV}$. \Part{a} What is the proton's velocity
4 (in multiples of $c$ and in $m/s$)? \Part{b} What is the proton's
5 linear momentum (in MeV/$c$)?
6 \end{problem*} % Prof. Venkat lecture problem #13
10 Using our results from Problem 9.35,
12 \gamma &= \frac{E}{m_0 c^2} = \frac{1173}{938} = 1.25 \\
13 v &= \sqrt{1-\frac{1}{\gamma^2}} c = 0.600c = \ans{180\U{Mm/s}}
18 p = m v = \gamma m_0 v = 1.25\cdot 938\U{MeV/$c^2$} \cdot 0.600c
19 = \ans{704\U{MeV/$c$}}