It depends on altitude and humidity
Mach I is about 1,225 kilometers per hour.
The speed of sound is around 760 miles per hour = Mach 1. So Mach 4 is 4*760 = 3040 mph.
Mach 9 would be approximately 9 times the speed of sound, or 6,192 miles per hour.
Mach 6.7 is approximately 5,130 miles per hour (mph). This speed is calculated based on the speed of sound, which varies with atmospheric conditions but is typically around 767 mph at sea level and standard conditions. Therefore, Mach 6.7 indicates a velocity that is over six times the speed of sound.
Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed medium through which the body is traveling. It is said that the aircraft is flying at Mach 1 if its speed is equal to the speed of sound in air (which is 332 m/s or 1195 km/hr or 717 miles/hour.) An aircraft flying at Mach 2 is flying at twice the speed of sound in air, etc.Mach 1 = Speed of SoundSpeed of Sound = 332 m/s or 1195 km/hr or 717 miles/hour or 1,125 ft/s
Mach is not an absolute speed but a relative speed. The Mach value of an object is the ratio of the speed fo the object travelling through a medium to the speed of sound travelling through the same medium. Now sound travels faster in denser mediums so the speed of sound in [dense]air at sea level is greater than the speed of sound at high altitude. So Mach 2 in the air at sea level is faster than Mach 2 at high altitude. But Mach 2 under water is very much faster. However, most people are ignorant about the proper meaning of Mach and assume that it is simply related to the speed of sound at sea level at normal temperature/pressure/humidity - approximately 760 miles per hour. In that case Mach 8 would be 6080 mph.
Mach 5 speed is equivalent to approximately 3,836 miles per hour (6,174 kilometers per hour).
Mach 50 is a speed equivalent to 50 times the speed of sound or approximately 38,000 miles per hour (61,000 kilometers per hour) in Earth's atmosphere. It is an extremely high velocity that is typically associated with hypersonic speeds.
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).
At sea level, Mach 80 would be approximately 97,488 kilometers per hour (60,596 miles per hour). This speed is significantly faster than the speed of sound, which is about 1,235 kilometers per hour (767 miles per hour) in dry air at 20°C (68°F).
Mach 10 is equivalent to 3,402.9 meters per second. It is about 7,000 miles per hour. At Mach 10, an aircraft could circumnavigate the earth in less than four hours. The Mach number is a measure of how fast an object is travelling relative to the speed of sound. The Mach number is calculated by dividing the speed of an object by the speed of sound. Speed of sound is about 760mph
The Concorde's maximum speed was at Mach 2.04 (1,354 mph). It's cruising speed was at Mach 2.02 (1,340 mph).
there are 13,475 kilometers per hour
The actual speed is 489 knots. However, the speed converted into different units are as follows: 251.56 meters/second, 562.73 miles/hour, or .7589 mach.
Mach 9.6 is approximately 11,700 kilometers per hour or about 7,300 miles per hour. It is nearly 9.6 times the speed of sound in air at sea level.
An object traveling at Mach 5 is moving at five times the speed of sound. At standard sea level conditions, this is roughly 3,836 miles per hour or 6,174 kilometers per hour. This speed is classified as hypersonic.
Mach 1.7 is approximately 2,088 kilometers per hour.
Mach 1.3 is 1.3 times the speed of sound, which is approximately 1,570 kilometers per hour (975 miles per hour) at sea level. So, Mach 1.3 would be around 2,041 kilometers per hour (1,269 miles per hour).