A rescuer on a helicopter that is 50 feet above sea level drops a lifebelt. The distance from the lifebelt to the sea can be modeled by the equation LaTeX: h\left(t\right)=-16t^2+sh ( t ) = − 16 t 2 + s, where t is the time, in seconds, after the lifebelt is dropped, and s is the initial height, in feet, of the lifebelt above the sea. How long will it take for the lifebelt to reach the sea? Round your answer to the nearest tenth of a second.