A ladder 34 ft long leans against a vertical wall. If the lower end is being moved away from the wall at the rate of 2 ft/sec how fast is the height of the top changing A ladder 34ft long leans against a vertical wall. If the lower end is being moved away from the wall at a rate of 2 ft/sec, how fast is the height of the top changing when the lower end us 16 ft from the wall