The base of diamond head is sea level. At least one portion of the cone rises to about 761 feet above sea level.
The elevation of Galveston varies from sea level to about 20 feet above sea level. Most of the city falls between 5 and 10 feet above sea level.
Waxhaw, North Carolina is 686 feet above sea level
Chattanooga, Tennessee is 676 feet above sea level
700 feet above sea level is not equal to negative 700 feet.
Mach 3.5 is 2,664.22 mph at sea level.
370 m (1,214 ft) above sea level
Mach is a measure of speed based on the speed of sound at sea level. Mach 1 = 642 MPH . Mach 2 = 2 x 642 MPH or 1284 MPH.
Subsonic means any speed below the speed of sound. (Mach 1). So subsonic aircraft range from 0 - 661 knots at sea level. (Mach 1 is 661 knots at sea level.)
At sea level, the F-16 can go Mach 1.2 (915 mph). At altitude it can go: Mach 2+ (1,500 mph)
It is 3800 miles per hour.
Mach 1 at sea level is 340.3 m/s, 761.2 mi/h, 1,225 km/h, so Mach 82 would be 82 times faster. so Mach 82 is... 27,904.6 m/s 62,418.4 mi/h 100,450 km/h
The Mach number for speed is a function of how fast an object is going relative to the speed of sound in that medium (which can vary). The speed of sound at sea level is around 768 mph, so Mach 3.3 at around this level will be 768 x 3.3 = 2534 mph
At sea level, the F-16 can go Mach 1.2 (915 mph). At altitude it can go: Mach 2+ (1,500 mph)
Mach 5 speed is equivalent to approximately 3,836 miles per hour (6,174 kilometers per hour).
An aircraft that flies faster than Mach 1- or about 770 miles an hour at sea level.
Mach is a unit of speed based on the speed of sound (which varies with altitude and pressure). Mach 1 is the speed of sound, 340.29 m/sec or about 761.2 mph at sea level. Mach 2.5 would be 2.5 times as fast, or about 1900 mph.