Physical quantities are measured as 'nu' where n is the magnitude and u is the unit. For example: A boy measured the length of a room as 3 m. Here 3 is the magnitude and m (metre) is the unit. 3 m can also be written as 300 cm.
No. The only European units I know of who were able to sustain that. kind of speed on foot were Foreign Legion-where the standard was 50. km per day. Other infantry units usually come in under 20 miles a day. (and closer to 12-15 miles per day).
In addition, a hovercraft will travel faster when traveling downwind than it will when it faces a headwind. Depending upon the terrain and the weather, the average speed of a hovercraft is 35 mph (56 km/h). Today's light recreational hovercraft can reach speeds in excess of 70 mph (112 km/h).