Usually walking speed, -4-5 mph.
5 mph
the answer is 30mph
60 Maximum Speed Towing a Trailer (in the UK)
370 knots
You should never tow an aircraft faster than a fast walking pace or slow jog. Somewhere around 3 or 4 mph. Some aircraft can be very unstable when being towed (afterall they are essentially just big, top-heavy tricycles) so special care should be taken when going around turns, over large bumps, or on slopes when towing an aircraft.
5
That is it's maximum speed. Different for every aircraft.
It depends on which aircraft is being used.
90 Km/Hr
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.