Halliday, Resnick & Walker — Motion in Two and Three Dimensions: Problem 44

44 A baseball leaves a pitcher’s hand horizontally at a speed of 153 km/h. The distance to the batter is 18.3 m. (a) How long does the ball take to travel the first half of that distance? (b) The second half? (c) How far does the ball fall freely during the first half? (d) During the second half? (e) Why aren’t the quantities in (c) and (d) equal?