Moderate# Angular Momentum of a Launched Projectile

APPHMC-92JSUU

A projectile of mass $m$ is launched with initial speed $v_0$ five times from a small height above the ground, each time at a different angle above the horizontal: $15^{\circ}$, $30^{\circ}$, $45^{\circ}$, $75^{\circ}$, and $90^{\circ}$ (directly upward).

In which of these launches does the projectile have the most angular momentum with respect to the ground directly underneath it?