is thrown vertically upward from the top of the building 448 feet tall with an initial velocity of 56 feet per second Its height h in feet after t seconds is given by h t 448 56t 16t2 After how long will it take for the ball to reach its maximus height Round your answer to 1 decimal place 4 9 sec 15 6 sec O 1 8 sec 8 2 sec