Arock is thrown straight up from the top of a bridge that is 75 ft high with an initial velocity of 32 ft/s. the height of the object can be modeled by the equation s ( t ) = -16 t2 + 32 t + 75. determine the time(s) the ball is lower than the bridge. write your answer in interval notation.
in two or more complete sentences, explain why (-∞,0) is not included in the solution.