## Is Mach 1 breaking the speed of sound?

The flight Mach is a unit of measuring the speed of sound in a given medium; a plane traveling at . 2 Mach moves at only two-tenths the speed of sound, while Mach 1 is equal to it. (The speed of sound is about 758 mph or 1,220 km/h at sea level, and decreases with altitude.)

**Who really broke the speed of sound?**

Chuck Yeager

Retired Air Force Brig. Gen. Charles “Chuck” Yeager, the World War II fighter pilot ace and quintessential test pilot who showed he had the “right stuff” when in 1947 he became the first person to fly faster than sound, has died.

### Is there a hypersonic jet?

The Hermeus jet has a projected top speed of Mach 5.5—or 4,219 mph—making it the fastest reusable jet on the planet.

**Who broke the speed of sound?**

Chuck Yeager is an American test pilot who was the first person to break the sound barrier — the point where a speeding object (such as an airplane) passes the speed of sound. Yeager made his history-setting flight on Oct. 14, 1947 in an airplane he dubbed Glamorous Glennis, after his first wife.

#### What is the formula for speed of sound?

The speed of sound formula is given by. c = √γ×Pρ. = √1.4×2 / 0.034k. Therefore, speed of sound = 286.97 m/s. Example 2. Calculate the pressure if sound travels through a medium that has a density 0.05 kPa and speed of sound is 400 ms-1.

**What happens when something breaks the sound barrier?**

The compressed air in front of the plane exerts a much larger than usual force on the plane. There is a noticeable increase in the aerodynamic drag on the plane at this point, hence the notion of breaking through the “sound barrier.”. When a plane exceeds the speed of sound it is said to be supersonic.

## What Mach is the speed of sound?

Mach 1.0 is the speed of sound in air, so a plane flying Mach 2.0 is flying twice as fast as the speed of sound. The speed of sound is not a constant, but depends on altitude (or actually the temperature at that altitude).