速度是相对于参考框架的对象位置的变化速率。它以每次距离的单位（例如每秒米（m/s））进行测量。
1 km/s = 3,280.84 ft/s
1 ft/s = 0 km/s
例子:
将15 每秒公里转换为每秒脚：
15 km/s = 49,212.598 ft/s
| 每秒公里 | 每秒脚 |
|---|---|
| 0.01 km/s | 32.808 ft/s |
| 0.1 km/s | 328.084 ft/s |
| 1 km/s | 3,280.84 ft/s |
| 2 km/s | 6,561.68 ft/s |
| 3 km/s | 9,842.52 ft/s |
| 5 km/s | 16,404.199 ft/s |
| 10 km/s | 32,808.399 ft/s |
| 20 km/s | 65,616.798 ft/s |
| 30 km/s | 98,425.197 ft/s |
| 40 km/s | 131,233.596 ft/s |
| 50 km/s | 164,041.995 ft/s |
| 60 km/s | 196,850.394 ft/s |
| 70 km/s | 229,658.793 ft/s |
| 80 km/s | 262,467.192 ft/s |
| 90 km/s | 295,275.591 ft/s |
| 100 km/s | 328,083.99 ft/s |
| 250 km/s | 820,209.974 ft/s |
| 500 km/s | 1,640,419.948 ft/s |
| 750 km/s | 2,460,629.921 ft/s |
| 1000 km/s | 3,280,839.895 ft/s |
| 10000 km/s | 32,808,398.95 ft/s |
| 100000 km/s | 328,083,989.501 ft/s |
规则