Second Cosmic Velocity to Knots (v2 → kn)
Formula
1 v2 = 21771.077124040712 knConversion Table
| v2 | kn |
|---|---|
| 0 | 0 |
| 1.0000 | 21,771 |
| 2.0000 | 43,542 |
| 3.0000 | 65,313 |
| 4.0000 | 87,084 |
| 5.0000 | 108,860 |
| 6.0000 | 130,630 |
| 7.0000 | 152,400 |
| 8.0000 | 174,170 |
| 9.0000 | 195,940 |
| 10.000 | 217,710 |
| 11.000 | 239,480 |
| 12.000 | 261,250 |
| 13.000 | 283,020 |
| 14.000 | 304,800 |
| 15.000 | 326,570 |
| 16.000 | 348,340 |
| 17.000 | 370,110 |
| 18.000 | 391,880 |
| 19.000 | 413,650 |
| v2 | kn |
|---|---|
| 20.000 | 435,420 |
| 21.000 | 457,190 |
| 22.000 | 478,960 |
| 23.000 | 500,730 |
| 24.000 | 522,510 |
| 25.000 | 544,280 |
| 26.000 | 566,050 |
| 27.000 | 587,820 |
| 28.000 | 609,590 |
| 29.000 | 631,360 |
| 30.000 | 653,130 |
| 31.000 | 674,900 |
| 32.000 | 696,670 |
| 33.000 | 718,450 |
| 34.000 | 740,220 |
| 35.000 | 761,990 |
| 36.000 | 783,760 |
| 37.000 | 805,530 |
| 38.000 | 827,300 |
| 39.000 | 849,070 |
| v2 | kn |
|---|---|
| 40.000 | 870,840 |
| 41.000 | 892,610 |
| 42.000 | 914,390 |
| 43.000 | 936,160 |
| 44.000 | 957,930 |
| 45.000 | 979,700 |
| 46.000 | 1,001,500 |
| 47.000 | 1,023,200 |
| 48.000 | 1,045,000 |
| 49.000 | 1,066,800 |
| 50.000 | 1,088,600 |
| 51.000 | 1,110,300 |
| 52.000 | 1,132,100 |
| 53.000 | 1,153,900 |
| 54.000 | 1,175,600 |
| 55.000 | 1,197,400 |
| 56.000 | 1,219,200 |
| 57.000 | 1,241,000 |
| 58.000 | 1,262,700 |
| 59.000 | 1,284,500 |
| v2 | kn |
|---|---|
| 60.000 | 1,306,300 |
| 61.000 | 1,328,000 |
| 62.000 | 1,349,800 |
| 63.000 | 1,371,600 |
| 64.000 | 1,393,300 |
| 65.000 | 1,415,100 |
| 66.000 | 1,436,900 |
| 67.000 | 1,458,700 |
| 68.000 | 1,480,400 |
| 69.000 | 1,502,200 |
| 70.000 | 1,524,000 |
| 71.000 | 1,545,700 |
| 72.000 | 1,567,500 |
| 73.000 | 1,589,300 |
| 74.000 | 1,611,100 |
| 75.000 | 1,632,800 |
| 76.000 | 1,654,600 |
| 77.000 | 1,676,400 |
| 78.000 | 1,698,100 |
| 79.000 | 1,719,900 |
Second Cosmic Velocity to Knots Conversion
Converting Second Cosmic Velocity (v2) to Knots (kn) is a common speed conversion. 1 v2 equals 21,771.077124 kn. For example, 100 v2 is equal to 2,177,107.712404 kn.
Quick Mental Math: Second Cosmic Velocity to Knots
1 knot ≈ 1.15 mph; or multiply knots by 1.15 to get mph.
Why is converting Second Cosmic Velocity to Knots tricky?
Nautical mile (6076 ft) differs from statute mile (5280 ft), creating irrational ratios.
Quick Reference Values
1 v2 = 21,771.077124 kn. 5 v2 = 108,855.38562 kn. 10 v2 = 217,710.77124 kn. 25 v2 = 544,276.928101 kn. 50 v2 = 1,088,553.856202 kn. 100 v2 = 2,177,107.712404 kn.
What is Second Cosmic Velocity?
Second Cosmic Velocity (v2) is a unit of speed. The second cosmic velocity, also known as escape velocity, is the minimum speed needed to break free from a planet’s gravitational field without further propulsion. For Earth, this speed is about 11.2 km/s, calculated by √(2GM/R) where G is the gravitational constant, M is Earth’s mass, and R its radius [nist-cuu]. Escape velocity was first derived from Newtonian gravity principles in the 17th century and later refined by physicists studying celestial mechanics. It is fundamental for understanding spacecraft trajectory planning [nist-cuu]. Escape velocity is essential in aerospace and astronautics worldwide, guiding mission planning for launches from Earth and other celestial bodies. It is standard knowledge in physics and engineering curricula globally [nist-cuu].
What is Knots?
Knots (kn) is a unit of speed. A knot is a unit of speed equal to one nautical mile per hour. It precisely corresponds to 1.852 kilometers per hour or 0.51444 meters per second. The knot is internationally recognized for maritime and aviation speed measurements and is defined using the international nautical mile of exactly 1852 meters [nist-si-guide]. The knot originated from the practice of measuring speed at sea using a 'log line' with knots tied at regular intervals. The term and unit were standardized with the adoption of the international nautical mile in 1929 by the International Hydrographic Organization [nist-si-guide]. Knots are the standard speed unit in global maritime navigation and aviation. Countries and organizations like the International Maritime Organization (IMO) and International Civil Aviation Organization (ICAO) mandate its use for vessel and aircraft speed reporting [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: second cosmic velocity, cosmic velocity 2nd, escape velocity, cosmic velocity two, cosmic velocity 2, knotz, knotses, knotss, knotts. All of these refer to the Second Cosmic Velocity to Knots conversion.