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Because the higher the altitude, the thinner the air, so the less work is needed by the engines. Sometimes there is also strong tailwinds which will speed it up. Also, this burns less fuel.
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Are airplanes jets?
Yes, jets are airplanes but they are called supersonic airplanes.
Does a tornado spin faster than an airplane can fly?
No. The fastest wind gust ever recorded in a tornado was 302 mph. By comparison, commercial jets regularly fly at 500 mph. Some fighter jets can fly at over 1,000 mph.
Who broke the speed of sound in a jet?
We call them sonic booms. There are jets can fly faster than sound speed.
Does friction cause objects to move faster or fly higher?
false
Did Harriet Quimby fly jets or planes?
jets
Do private jet planes travel faster?
Faster than what? A private jet plane typically has a maximum cruising speed of 0.85 Mach. This makes it faster than a turboprop, much faster than a piston plane, but slower than a jet fighter.
Do jets fly in the stratosphere?
No
What is faster jet or helicopter?
Jets are much faster .
Why do jet planes have streamlined shapes?
All aircraft, not just jets, have shapes as streamlined as possible to enable them to fly faster and use less fuel.
Why do jets fly?
they have wings and engines
What atmosphere do jets fly in?
fdfg
Are jets really airplanes?
Yes, jets really are airplanes but they are faster airplanes.
