Aladder 25 feet long is leaning against the wall of a house. the base of the ladder is pulled away from the wall at a rate of 2 feet per second. (do not use mixed numbers. round your answers to three decimal places.)

(a) how fast is the top of the ladder moving down the wall when the base is given below?
15 feet away from the wall
ft/sec

20 feet away from the wall
ft/sec

24 feet away from the wall
ft/sec