A rock thrown with speed $12\mathrm{.}0$ m$/$s and launch angle $30\mathrm{.}0($above the horizontal$)$ travels a horizontal distance of d $=16\mathrm{.}5$ m before hitting the ground. From what height was the rock thrown? Use the value g $=9\mathrm{.}800$ m$/$s$2$ for the free$-$fall acceleration. A second rock is thrown straight upward with a speed $6\mathrm{.}000$ m$/$s $.$ If this rock takes $1\mathrm{.}588$ s to fall to the ground, from what height H was it released?