For a scene in a movie, a sack of money is dropped from the roof of a 800 ft skyscraper. The height of the sack above the ground in feet is given by h(t) = −16t2 + 800, where t is the time in seconds. How long will it take the sack to reach the ground? Round to the nearest tenth of a second. It will take the sack approximately seconds to reach the ground.