AVIATION An air traffic controller manages the flow of aircraft in and out of airport airspace by guiding pilots during takeoff and landing. An air traffic controller is monitoring two planes that are in flight near a local airport. The first
plane is at an altitude of 1000 meters and is ascending at a rate of 400 meters per minute. The second plane is at an
altitude of 5900 meters and is descending at a rate of 300 meters per minute.