Space shuttle Atlantis lands

The video provides a brief overview of a flight's current altitude and speed, highlighting the aircraft's position at 56,000 feet and traveling at 690 mph.

What is the altitude mentioned in the text?

What speed is indicated in the text?

How would you convert the altitude from feet to meters?

What factors could affect the speed of an aircraft at 56,000 feet?

Discuss the significance of flying at high altitudes.