IMathAS-libretexts

A ball of mass $\displaystyle {m}$ and momentum $\displaystyle {p}$ has kinetic energy equal to which of the following?

$\displaystyle \frac{{1}}{{2}}$ $\displaystyle {p}$ ² $\displaystyle /{m}$
$\displaystyle {2}$ $\displaystyle {p}$ ² $\displaystyle /{m}$
$\displaystyle \frac{{1}}{{2}}$ $\displaystyle {m}$ $\displaystyle /{p}$ ²
$\displaystyle {2}$ $\displaystyle {m}$ $\displaystyle /{p}$ ²
$\displaystyle {p}$ ² $\displaystyle /{m}$