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).
Ocelots, iron golems, wither skeletons, baby zombies, zombie pigmen, endermen and villagers can also sprint like the player. Sprinting allows the player to move at around 5.612 meters/second, 30 percent faster than the normal walking speed of around 4.317 m/s. The player can turn while sprinting, which will slightly reduce their speed.