1.Jayani is standing on a 15 m high cliff and throws a baseball straight up in the air with an initial velocity of 12 m/s. Determine the maximum height of the ball with respect to the ground and the time it is in the air before it lands on the ground. 2. David accidently throws his cellphone out of an open window with a velocity of 4.5 m/s horizontally. David quickly looks out the window and notices a friend outside. The window is 8.5 m above the ground. How far away from the building should the friend stand to catch the cell phone at ground level?