Ignore air resistance. Assume a free falling object accelerates at $g$ feet per second. (On Earth, of course, $g=32$.) Your answers will be mathematical expressions involving $g$, $V$, and $H$.
You toss a rock up vertically at an initial speed of $V$ feet per second and release it at an initial height of $H$ feet. The rock will remain in the air for seconds.
It will reach a maximum height of feet after seconds.