Question 15 You throw a ball vertically upward from a 50 - m building roof. The ball left your hand at a velocity of 20.0 mls. On its way down, it just misses the roof. Ignoring air resistance so that the ball is in free fall, a. The maximum height reached by the ball is Blank 1. b. The time needed to reach the maximum height is Blank 2. c. The time needed for the ball to reach the ground is Blank 3. d. The nal velocity of the ball is Blank 4. Answer is 2 decimal places. Blank 1 ' Add your answer ' Blank 2 ' Add your answer ' Blank 3 ' Add your answer ' Blank 4 ' Add your