In Ancient Greek, one of the final two or three syllables of a word carries an accent. Each syllable may contain one or two vocalic morae, but only one can be accented; accented morae are pronounced at a higher pitch.
US military to launch fastest-ever plane. By the time you finish reading this sentence, the Falcon HTV-2, the fastest plane ever built, could have flown 18 miles. It would get from London to Sydney in less than an hour, while withstanding temperatures of almost 2,000C, hotter than the melting point of steel.
What is the Fastest Airplane in the World? The Lockheed SR-71, the fastest airplane in the world. Though not the world's absolute fastest aircraft, the Lockheed Martin F-22 Raptor can accelerate to and sustain supersonic speeds without the use of its afterburners. The Boeing 747 has a cruise speed of 550 miles per hour, which is actually faster than the top speed combat fighters could achieve in World War Two.