The Burj Khalifa in Dubai is the tallest building in the world at about 828 m. A daredevil climbs to the top of the building and sees the the Boulevard Plaza 2(141 m tall) about 300 m away. She pulls out a baseball and throws it horizontally and it lands on the roof of the second building. (Ignore airresistance)(A) How long did the baseball take to hit the roof? (B) How fast did she throw the baseball?