Problem 5: A child in a tree throws a ball downward to a friend on the ground 2.0 meters below her. The friend catches the ball after 0.5 seconds. How fast is the child in the tree throw the ball?Question: A child in a tree throws a ball downward to a friend on the ground 2.0 meters below her.  The friend catches the ball after 0.5 seconds.  How fast is the child in the tree throw the ball?