A 15-foot ladder is leaning against the wall of a house. The bottom of the ladder moves away from the base of the wall at a constant rate of 2 ft/min. At what rate is the top of the ladder descending at the instant the bottom of the ladder is 5 feet from the wall? SELECT པ་ 5 ft/min √2 ft/min √2 1 ft/min 2 5 ft/min √2