Foot per second squared
The foot per second squared is a unit of acceleration. It expresses change in velocity expressed in units of Foot [per second|feet per second] divided by time in seconds traveled or displaced, divided by the time in seconds. The corresponding unit in the International System of Units is the metre [per second squared].
Abbreviations include ft/s2, ft/sec2, ft/s/s, ft/sec/sec, and ft s−2.