1. A boy threw a ball vertically upward. It returned to his hands after 9.8 s. (a) What was the ball's initial speed? (b) With what speed did it return to the boy's hand? (c) How high did it go? 2. A photographer inside a helicopter descending vertically at 15 m/s at an altitude of 55 m accidentally drops his camera. How long will it take the camera to reach the ground? 3. Make 1 sample problem about Free Fall. Make sure to provide a correct computation and answer