ft/s²
foot per second squared
Accelerationexact by definition
The foot per second squared is exactly 0.3048 m/s², following from the exact foot. It appears in American dynamics and ballistics work, where standard gravity is taken as 32.174 ft/s². The factor is exact by definition.
Watch out: US customary dynamics carries the conversion constant \(g_c = 32.174\) lbm·ft/(lbf·s²) to reconcile pounds-mass with pounds-force. Dropping it, or applying it twice, is the standard failure mode of imperial dynamics calculations.
| 1 ft/s² | 0.3048 m/s² |
Solvers that use acceleration