The x-15 fly-by at 4520 MPH is the fastest jet in the world. A private jet has a speed of around 600 miles per hour and a commercial jet comes in at 500 miles per hour.
At the equator about 40 hours, at the poles a few minutes.
very fast
There is no such thing as a jet train.
about 40mph
400
9500 mph
366mph (516kph)
250 mile
The top speed of an aircraft is it's absolute all out speed with thrust full on. This can only be kept up for a very short while. However, the fastest fighters can go over 1,500 mph. An average jet airliner cruises at about 570 mph.
about 30 mph
it can go faster !
Over 400 Mph