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.
North American X-15 is the first on our top 10 fastest aircraft in the world list. This aircraft has the current world record for the fastest manned aircraft. Its maximum speed was mach 6.70 (about 7,200 km/h) which it attained on the 3rd of October 1967.