stationary billiard ball after the collision?

$2\mathrm{.}00\frac{m}{s}$

$1\mathrm{.}50\frac{m}{s}$

$0\mathrm{.}866$ m$/$s

$0\mathrm{.}750\frac{m}{s}$

$2\mathrm{.}59\frac{m}{s}$