A baseball is thrown upward at a velocity of 36 feet per second from a height of 7 feet. The equation to represent the height (h) after t seconds is $\displaystyle{h}=-{16}{{t}}^{{2}}+{36}{t}+{7}\usepackage{cmbright}\Huge\$ . How long before the ball hits the ground? (Round to the nearest hundredth of a second.)