.35 per 1
Mach 1 per second is 230,281,663 feet per second.
Mach 1 is 761.21 mph.Use this equation to convert Mach to miles per hour: mach x 761.21 = mph
Mach 3.6 = 2,740.34 mph
Mach 1 = 761.207051 Miles Per Hour Mach 2 = 1,522.4141 Miles Per Hour Mach 3 = 2,283.62115 Miles Per Hour Mach 4 = 3,044.8282 Miles Per Hour http://en.wikipedia.org/wiki/Mach_number
Mach 10 = 7,612.1 mph
Mach 19 is 14,462,934 miles per an hour
Mach 1.7 is approximately 2,088 kilometers per hour.
Mach 10 = 7,612.07 mph
Mach 1 is 761.21 mph
Mach 1 (or the speed of sound) is 1,225km per hour Mach 75 is there for 91,875 km/h
Answer: 219,000 km/h = 136,080.291 mph
Mach one is the speed of sound, which is about 761.2 miles per hour (340.3 meters per second). Mach two is twice the speed of sound, which is about 1,522.4 miles per hour (680.6 meters per second).