A television camera is 30 feet from the sideline of a basketball court that is 94 feet long. The camera is located 7 feet from mid-court. Through what angle must it sweep in order to cover all the action on the court? Two balls, with the same speed , are thrown in opposite directions from a tower, one vertically upwards and the other vertically downwards. The time taken by each ball to reach the ground is 6s and 2s, respectively. What is the height of the tower and the initial velocity of the two balls?