Conversion number between feet per hour [fph] and speed of sound [s] is 2.4712715998478 × 10-7. This means, that feet per hour is smaller unit than speed of sound.
Switch to reverse conversion:
from speed of sound to feet per hour conversion
| [fph] |
Result in speed of sound
?If conversion between feet per hour to metre-per-second and metre-per-second to speed of sound is exactly definied, high precision conversion from feet per hour to speed of sound is enabled.
Since definition contain rounded number(s) too, there is no sense for high precision calculation, but if you want, you can enable it. Keep in mind, that converted number will be inaccurate due this rounding error!
| Start value: | [feet per hour] |
| Step size | [feet per hour] |
| How many lines? | (max 100) |
| feet per hour | speed of sound |
|---|---|
| 0 | 0 |
| 10 | 2.4712715998478 × 10-6 |
| 20 | 4.9425431996956 × 10-6 |
| 30 | 7.4138147995433 × 10-6 |
| 40 | 9.8850863993911 × 10-6 |
| 50 | 1.2356357999239 × 10-5 |
| 60 | 1.4827629599087 × 10-5 |
| 70 | 1.7298901198934 × 10-5 |
| 80 | 1.9770172798782 × 10-5 |
| 90 | 2.224144439863 × 10-5 |
| 100 | 2.4712715998478 × 10-5 |
| 110 | 2.7183987598326 × 10-5 |
Definition of feet per hour unit: ≡ 1 ft / 3600 s = 30.48 cm / 3600 s. The speed with which the body moves 1 foot (or 30.48 centimetres) in 1 hour.
Definition of speed of sound unit: ≡ (1.4 x 286 x (20+273.15) )-2. Speed of sound in the air. But this speed varies between 295-340 m/s depending on the air temperature and pressure. From the NASA formula I calculated the speed on sea level at 20°C.
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