An air traffic controller spots two airplanes at the samealtitude converging to a point as they fly at right angles to eachother. One airplane is 120 miles from the point and has a speed of480 miles per hour. The other is 160 miles from the point and has aspeed of 640 miles per hour.
(a)At what rate is the distance between the planes changing? InMPH
(b)How much time does the controller have to get one of theairplanes on a different flight path? in MIN
