Perceptual region is also the way a person views a region (example the southern region, country music, hillbillies, confederates, etc). It has to do with stereotypes, and the way that your region is represented.ernacular Region (or Perceptual Region)- An area that people believe exists as part of their cultural identity.
1 knot = 1.15077945 miles per hour. A knot is a speed of 1 nautical mile per hour. A nautical mile has been defined in slightly varying ways over time. It is based on the distance traveled in moving 1 minute of arc along any meridian. Since the Earth is not a perfect sphere, the exact distance changes from place to place.
The 757-200 will generally touchdown with a speed of around 125 kts. The 767 is about 10 knots faster than this. These are average speeds and very light loads will reduce it, while heavier ones will increase it.