Angular momentum calculations

A $0.10\text{kg}$‍ ball is thrown with a speed of $v=2,0{\displaystyle \frac{\text{m}}{\text{s}}}$‍ at a resting stick that can rotate around one end at axis $O$‍. The ball hits the stick at $r=1.5\text{m}$‍ from $O$‍ as shown below.

${\displaystyle \frac{\text{kg}\cdot {\text{m}}^2}{\text{s}}}$‍