# What is the speed of sound in feet?

Table of Contents

## What is the speed of sound in feet?

1087 ft/sec

At 0° Centigrade and 1.013 x 105 Newtons per square meter (normal atmospheric pressure), the speed of sound is 331.5 meters/sec, i.e. 1087 ft/sec or 740 miles/hour. At 20°C (68°F) the speed is 1130 ft/sec or 344 m/sec.

**What speed does sound travel in air?**

approximately 332 metres per second

Sound can travel in air at approximately 332 metres per second. This is fast but not nearly as fast as light which travels at 300 000 kilometres per second. This difference in speeds enables us to appreciate that sound does take time to travel.

**How many feet a second does sound travel?**

1,087 feet per second

Sound travels through air at “the speed of sound.” Officially, the speed of sound is 331.3 meters per second (1,087 feet per second) in dry air at 0 degrees Celsius (32 degrees Fahrenheit).

### What is the speed of sound at 1000 ft?

Speed of Sound at a known temperature and density of air

Altitude | Speed of Sound | |
---|---|---|

Feet (ft) | Meter (m) | mph |

0 (sea level) | 0 (sea level) | 761.1 |

5,000 | 1524 | 747.9 |

10,000 | 3048 | 734.5 |

**How long does it take for sound to travel 50 feet?**

Foot Per Second to Speed Of Sound Conversion Table

Feet Per Second | Speed Of Sound |
---|---|

20 ft/s | 0.017773 sound |

30 ft/s | 0.026659 sound |

40 ft/s | 0.035545 sound |

50 ft/s | 0.044431 sound |

**What is the speed of sound at 35000 feet?**

about 660 mph

At 35,000 feet, the cruising altitude of a typical passenger jet, sound travels at about 660 mph (1,062 kmph).

## What is the speed of sound at 20000 feet?

660 miles per hour

At 20,000 feet (6,096 meters), the speed of sound is 660 miles per hour (1,062 kilometers per hour).

**How long does it take for sound to travel 200 feet?**

Foot Per Second to Speed Of Sound Conversion Table

Feet Per Second | Speed Of Sound |
---|---|

90 ft/s | 0.079977 sound |

100 ft/s | 0.088863 sound |

200 ft/s | 0.177726 sound |

300 ft/s | 0.266589 sound |

**How long does it take sound to travel 100 feet?**

### What is the speed of sound in air at 40 c?

Temperature of air ϑ in °C | Speed of sound c in m/s | Density of air ρ in kg/m3 |
---|---|---|

+40 | 354.94 | 1.1272 |

+35 | 351.96 | 1.1455 |

+30 | 349.08 | 1.1644 |

+25 | 346.18 | 1.1839 |

**How many feet do you travel per second at 60 mph?**

88 ft. per second

per sec. So at 60 mph he is traveling 88 ft. per second.

**What is 1 mile per hour equal to in feet per second?**

Mile Per Hour to Foot Per Second Conversion Table

Miles Per Hour | Feet Per Second |
---|---|

1 mph | 1.4667 ft/s |

2 mph | 2.9333 ft/s |

3 mph | 4.4 ft/s |

4 mph | 5.8667 ft/s |

## Why do planes fly at 38000 feet?

Due to lower resistance at higher altitudes, commercial airplanes can keep moving forward with minimal fuel expenditure. Commercial airplanes typically fly between 32,000 feet and 38,000 feet, with the sweet spot being approximately 35,000 feet, which is popularly referred to as cruising altitude.

**What is the speed of sound at 80000 feet?**

Mach 2, or twice the speed of sound, is over 1500 miles an hour at Earth’s surface, but it’s only around 1300 in the cold air at 80,000 feet.

**What is the sound barrier at 40000 feet?**

In other words, Mach 2 at sea level is a greater number of miles per hour (or kilometers per hour) than Mach 2 at 30,000 feet, which is a greater number of miles per hour than Mach 2 at 40,000 feet. When an aircraft reaches Mach 1, it is said to “break the sound barrier.”

### What is the speed of sound at 80000 ft?

The laws of physics dictate the speed of all those processes. Students of engineering or physics learn to calculate the speed of sound using those laws. They show that the speed rises as the square root of absolute temperature. It’s around 760 miles an hour at Earth’s surface on a warm day, but only 660 at 80,000 feet.