Question

You are situated 20 feet from the base of Tower Glitz Plaza watching an external elevator descend down the side of the building. At a certain instant the elevator is 700 fot away from you, and its distance from you is decreasing at a rate of 12 t/sec. How fast is the elevator descending at that intant? ___ ft/sec

Answer 1

When the elevator is 700 feet away from you and its distance is decreasing at a rate of 12 ft/sec, the elevator's descent rate is 12 ft/sec.