Yard per Hour to Cosmic Velocity - Second
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How to Convert Yard per Hour to Cosmic Velocity - Second
To yd/min: ÷ 60. To ft/h: × 3. To m/h: × 0.9144.
1 yd/h = 0.000254 m/s = 0.0009144 km/h = 0.9144 m/h.
For example, 1 Yard per Hour (yd/h) = 2.267857e-8 Cosmic Velocity - Second (v₂).
Yard per Hour to Cosmic Velocity - Second — Common Values
| Yard per Hour (yd/h) | Cosmic Velocity - Second (v₂) |
|---|---|
| 0.1 | 2.267857e-9 |
| 0.5 | 1.133929e-8 |
| 1 | 2.267857e-8 |
| 2 | 4.535714e-8 |
| 5 | 1.133929e-7 |
| 10 | 2.267857e-7 |
| 25 | 5.669643e-7 |
| 50 | 0.000001133928571 |
| 100 | 0.000002267857143 |
| 500 | 0.00001133928571 |
| 1000 | 0.00002267857143 |
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 Might appear in some historical documents.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.
About Cosmic Velocity - Second (v₂)
The second cosmic velocity (Earth's escape velocity) is approximately 11,200 m/s (11.2 km/s), the minimum speed to escape Earth's gravity completely.
v₂ = √(2GM/r) = √2 × v₁ ≈ 11.2 km/s. Exactly √2 times the first cosmic velocity.
To km/h: × 3,600. To mph: × 25,000. 11.2 km/s = 40,320 km/h = 25,053 mph.
Moon missions, Mars missions, deep space probes (Voyager, New Horizons), and any mission leaving Earth's gravity well.
Apollo missions: ~11.2 km/s. Voyager probes: exceeded v₂ to leave solar system. New Horizons: launched at record 16.26 km/s (fastest ever from Earth).
Thinking you need this speed everywhere — you only need it at launch. In space, much less Δv is needed.
~11 km/s to escape Earth. √2 × orbital velocity. Remember: orbit ≈ 8 km/s, escape ≈ 11 km/s.
