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9 miles/hour * (5280 feet/mile) * (1 hr/3600 s) = 13.2 ft/s
132 feet per second at 90 mph.
Approximately (it depends on temperature and pressure and humidity) 1129 feet per sec or about one mile per 5 seconds.
C=λv 340 m/s= 20 1/sec (λ) v= 17 m= ~56 ft
1100 feet Update: You're just about right. Technically, though, it's a little over: 761 miles = 4018080 feet 1 hour = 3600 seconds ~1116 constitutes supersonic flight …at sea level
The speed of sound is 760 mph there is a simple maths equation to find out what it is in fps. I have done this and have figured out that: 760 mph (The sound barrier) is 1114.…66666666
340.29 meters per second at sea level.
Notice: The speed of sound changes with temperature and a little bit with humidity − but not with air pressure (atmospheric pressure). The words "sound pressure at… sea level" are incorrect and misleading. The temperature indication, however, is absolutely necessary. The speed of sound at 20 degrees Celsius (68 degrees Fahrenheit) is 343 meters per second. That is 1126.547 feet per second.
The speed of sound at sea level is 340.29 meters per second.
343 meters per second at sea level.
1,100 feet per second = 66,000 feet per minute
65 mph = 95.3 feet per second.
At 60 mph you are traveling at 88 feet per second.
Sound travels at a speed of 7189 feet per second how many meters per second does sound travel in this medium?
2191.21 meters per second.
At 180mph you are traveling at 264 feet per second.