In aerodynamics, hypersonic speed refers to speeds much faster than the speed of sound, usually more than approximately Mach 5. [1][2][3]

Mach is the ratio of an object's speed to the speed of sound. For example, something traveling at Mach 5 is traveling at 5 times the speed of sound. The speed of sound varies depending on many factors. …

The local speed of sound, and hence the Mach number, depends on the temperature of the surrounding gas. The Mach number is primarily used to determine the approximation with which a flow can be …

Mach Five is the racing car driven by "Speed Racer" ("Go Mifune" in the Japanese version), whose car was designed, manufactured, and created by "Pops Racer" (Daisuke Mifune), Speed Racer's father.

Mach to Miles per hour (Mach to mph) conversion calculator for Speed conversions with additional tables and formulas.

The Mach 5 is a unique car. With manual gears (as of The Secret Engine) and a top speed of ~250 mph (as of Speed Racer on Super NES) making this a capable machine. The Mach 5 is an open roof …

Jul 11, 2025 · When anything flies faster than Mach 5.0, we call it travelling at hypersonic speed. Only experimental vehicles, spacecraft, and the fastest military projects have flown this fast.