The maximum cruise speed of a McDonnell Douglas DC-10 is Mach 0.88 (610 mph / 982 km/h / 530 kt)
City or highway mileage?
370 knots
Usually walking speed, -4-5 mph.
It depends on which aircraft is being used.
5
That is it's maximum speed. Different for every aircraft.
15
5 mph
Fast enough to do the job. The actual maximum speed of all stealth aircraft is classified. Like any aircraft, the speed will depend on many factors.
10 mph maximum
maximum 10 mph
Unfortunately, this is much too general to answer. It completely depends on the type, manufacturer, and model of the aircraft.