速度是对象移动的速度，而速度是指定方向的速度。它以每秒米（m/s）为单位进行测量。
1 M/s = 1,125.328 ft/s
1 ft/s = 0.001 M/s
例子:
将15 声音速度转换为每秒脚：
15 M/s = 16,879.921 ft/s
| 声音速度 | 每秒脚 |
|---|---|
| 0.01 M/s | 11.253 ft/s |
| 0.1 M/s | 112.533 ft/s |
| 1 M/s | 1,125.328 ft/s |
| 2 M/s | 2,250.656 ft/s |
| 3 M/s | 3,375.984 ft/s |
| 5 M/s | 5,626.64 ft/s |
| 10 M/s | 11,253.281 ft/s |
| 20 M/s | 22,506.562 ft/s |
| 30 M/s | 33,759.843 ft/s |
| 40 M/s | 45,013.123 ft/s |
| 50 M/s | 56,266.404 ft/s |
| 60 M/s | 67,519.685 ft/s |
| 70 M/s | 78,772.966 ft/s |
| 80 M/s | 90,026.247 ft/s |
| 90 M/s | 101,279.528 ft/s |
| 100 M/s | 112,532.808 ft/s |
| 250 M/s | 281,332.021 ft/s |
| 500 M/s | 562,664.042 ft/s |
| 750 M/s | 843,996.063 ft/s |
| 1000 M/s | 1,125,328.084 ft/s |
| 10000 M/s | 11,253,280.84 ft/s |
| 100000 M/s | 112,532,808.399 ft/s |
规则