The foot per second (ft/s) is a unit of speed in the Imperial and US customary systems. It measures the distance in feet traveled in one second. 1 ft/s is exactly 0.3048 meters per second (m/s).
The foot has ancient origins, derived from the average length of a human foot. The second, as a unit of time, evolved from the division of the hour into 60 minutes, and then into 60 seconds. The combination of these units for measuring speed became standardized in the 19th century, particularly in the United States and the UK.
Foot per second is commonly used in various fields, including engineering, physics, and aviation. It is particularly prevalent in the United States for everyday speed measurements, such as vehicle speeds and athletic performance.