Cosmic Velocity - First to Yard per Hour
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How to Convert Cosmic Velocity - First to Yard per Hour
To km/h: × 3,600. To mph: × 17,672. 7.9 km/s = 28,440 km/h = 17,672 mph.
v₁ = √(GM/r) where G is gravitational constant, M is Earth's mass, r is Earth's radius. Approximately 7.9 km/s.
For example, 1 Cosmic Velocity - First (v₁) = 31102362.2 Yard per Hour (yd/h).
Cosmic Velocity - First to Yard per Hour — Common Values
| Cosmic Velocity - First (v₁) | Yard per Hour (yd/h) |
|---|---|
| 0.1 | 3110236.22 |
| 0.5 | 15551181.1 |
| 1 | 31102362.2 |
| 2 | 62204724.41 |
| 5 | 155511811 |
| 10 | 311023622 |
| 25 | 777559055.1 |
| 50 | 1555118110 |
| 100 | 3110236220 |
| 500 | 15551181100 |
| 1000 | 31102362200 |
About Cosmic Velocity - First (v₁)
The first cosmic velocity (escape velocity from Earth's surface to orbit) is approximately 7,900 m/s (7.9 km/s), the minimum speed needed to achieve Earth orbit.
v₁ = √(GM/r) where G is gravitational constant, M is Earth's mass, r is Earth's radius. Approximately 7.9 km/s.
To km/h: × 3,600. To mph: × 17,672. 7.9 km/s = 28,440 km/h = 17,672 mph.
Minimum speed for satellites, space station orbit, and low Earth orbit (LEO) calculations.
ISS orbits at ~7.66 km/s. Below this speed, you fall back to Earth. Above it, you stay in orbit (if horizontal).
Confusing with escape velocity (second cosmic velocity, 11.2 km/s) — orbital velocity is lower.
Remember: ~8 km/s for orbit, ~11 km/s to escape. v₁ is minimum for orbit, not escape.
About Yard per Hour (yd/h)
Yard per hour measures distance in yards traveled over one hour. Rarely used except in specialized contexts.
1 yd/h = 0.000254 m/s = 0.0009144 km/h = 0.9144 m/h.
To yd/min: ÷ 60. To ft/h: × 3. To m/h: × 0.9144.
No common modern applications. Might appear in some historical documents.
No notable facts — too rarely used.
Even existing is a mistake — use m/h, ft/h, or mph instead.
1,760 yd/h = 1 mph. Extremely uncommon. Better to use other units.
