How fast does an intercontinetal ballistic missile fly?

Answer 1

really really fast.....
Speed 15,000 miles/hour (24,000 km/hr; 6.7 km/sec)

Answer 2

Answer: An ICBM can attain speed between 6 to 8 kilometers per second.

Explanation: How high missiles fly determines how fast they come down onto their targets. The speed at which they come down is important because the greater the speed the more difficult it is for ground-based defenses to do their job. A warhead’s maximum speed just before reentry is a natural consequence of the range of the missile on which it was launched. The longer the range, the higher the missile must climb to reach it. The higher it climbs, the more time it takes for it to fall to the ground. And the longer time it takes, the more time that gravity has to make it go faster. Since gravity accelerates the warhead downward at 10 meters per second, and an intercontinental missile may be falling from an altitude of 1200 to 1600 kilometers, it may attain a speed of between 6 and 8 kilometers per second before it hits the atmosphere. For the same reason, a short-range missile like the Iraqi version of the Scud used in the Gulf War of 1991 reaches only heights of some 160 kilometers and hence arrives at a speed of less than 2 km per second.

Answer 3

The first answer makes sense. Orbital velocity is 17,500 miles per hour (about 5 miles a second). An ICBM would be somewhat less, because it's somewhat less than orbital in order to fly long distances across the globe.

Answer 4

Mach 7

Answer 5

Judging by the recent tests of the U.S. anti-ballistic missle defense system...as fast as it wants.