Apitching machine is programmed to pitch baseballs horizontally at a speed of 79 mph . the machine is mounted on a truck and aimed backward. as the truck drives away from a man at a speed of 55 mph , the machine shoots a ball towards him. a truck drives away from a man holding a baseball glove. a pitching machine in the bed of the truck pitches a baseball towards the man. determine the correct relative speed for each object pair. the speed of the pitching machine relative to the truck the speed of the pitched ball relative to the truck the speed of the pitching machine relative to the man the speed of the pitched ball relative to the man