km/h vers ft/s convertisseur - Kilomètre par Heure vers Pied par Seconde

Conversion derivation

Express both km/h and ft/s in the same base unit m/s (meter per second), then cancel the shared base unit.

1. 1

   Rewrite km/h in the base unit

   $$1km/h=0.277778m/s$$
2. 2

   Rewrite ft/s in the base unit

   $$1ft/s=0.3048m/s$$
3. 3

   Forward conversion

   $$\begin{array}{rl}1km/h& =\frac{0.277778\cancel{m/s}}{0.3048\cancel{m/s}}\times 1ft/s\\ & =\frac{0.277778}{0.3048}ft/s\\ & =0.911345144357ft/s\end{array}$$
4. 4

   Reverse conversion

   $$\begin{array}{rl}1ft/s& =\frac{0.3048\cancel{m/s}}{0.277778\cancel{m/s}}\times 1km/h\\ & =\frac{0.3048}{0.277778}km/h\\ & =1.09727912218km/h\end{array}$$