Kilometers per Hour to First Cosmic Velocity (km/h → v1)
Formula
1 km/h = 0.00003516174402250352 v1Conversion Table
| km/h | v1 |
|---|---|
| 0 | 0 |
| 1.0000 | 0.000035162 |
| 2.0000 | 0.000070323 |
| 3.0000 | 0.00010549 |
| 4.0000 | 0.00014065 |
| 5.0000 | 0.00017581 |
| 6.0000 | 0.00021097 |
| 7.0000 | 0.00024613 |
| 8.0000 | 0.00028129 |
| 9.0000 | 0.00031646 |
| 10.000 | 0.00035162 |
| 11.000 | 0.00038678 |
| 12.000 | 0.00042194 |
| 13.000 | 0.00045710 |
| 14.000 | 0.00049226 |
| 15.000 | 0.00052743 |
| 16.000 | 0.00056259 |
| 17.000 | 0.00059775 |
| 18.000 | 0.00063291 |
| 19.000 | 0.00066807 |
| km/h | v1 |
|---|---|
| 20.000 | 0.00070323 |
| 21.000 | 0.00073840 |
| 22.000 | 0.00077356 |
| 23.000 | 0.00080872 |
| 24.000 | 0.00084388 |
| 25.000 | 0.00087904 |
| 26.000 | 0.00091421 |
| 27.000 | 0.00094937 |
| 28.000 | 0.00098453 |
| 29.000 | 0.0010197 |
| 30.000 | 0.0010549 |
| 31.000 | 0.0010900 |
| 32.000 | 0.0011252 |
| 33.000 | 0.0011603 |
| 34.000 | 0.0011955 |
| 35.000 | 0.0012307 |
| 36.000 | 0.0012658 |
| 37.000 | 0.0013010 |
| 38.000 | 0.0013361 |
| 39.000 | 0.0013713 |
| km/h | v1 |
|---|---|
| 40.000 | 0.0014065 |
| 41.000 | 0.0014416 |
| 42.000 | 0.0014768 |
| 43.000 | 0.0015120 |
| 44.000 | 0.0015471 |
| 45.000 | 0.0015823 |
| 46.000 | 0.0016174 |
| 47.000 | 0.0016526 |
| 48.000 | 0.0016878 |
| 49.000 | 0.0017229 |
| 50.000 | 0.0017581 |
| 51.000 | 0.0017932 |
| 52.000 | 0.0018284 |
| 53.000 | 0.0018636 |
| 54.000 | 0.0018987 |
| 55.000 | 0.0019339 |
| 56.000 | 0.0019691 |
| 57.000 | 0.0020042 |
| 58.000 | 0.0020394 |
| 59.000 | 0.0020745 |
| km/h | v1 |
|---|---|
| 60.000 | 0.0021097 |
| 61.000 | 0.0021449 |
| 62.000 | 0.0021800 |
| 63.000 | 0.0022152 |
| 64.000 | 0.0022504 |
| 65.000 | 0.0022855 |
| 66.000 | 0.0023207 |
| 67.000 | 0.0023558 |
| 68.000 | 0.0023910 |
| 69.000 | 0.0024262 |
| 70.000 | 0.0024613 |
| 71.000 | 0.0024965 |
| 72.000 | 0.0025316 |
| 73.000 | 0.0025668 |
| 74.000 | 0.0026020 |
| 75.000 | 0.0026371 |
| 76.000 | 0.0026723 |
| 77.000 | 0.0027075 |
| 78.000 | 0.0027426 |
| 79.000 | 0.0027778 |
Kilometers per Hour to First Cosmic Velocity Conversion
Converting Kilometers per Hour (km/h) to First Cosmic Velocity (v1) is a common speed conversion. 1 km/h equals 0.000035 v1. For example, 100 km/h is equal to 0.003516 v1.
Quick Reference Values
1 km/h = 0.000035 v1. 5 km/h = 0.000176 v1. 10 km/h = 0.000352 v1. 25 km/h = 0.000879 v1. 50 km/h = 0.001758 v1. 100 km/h = 0.003516 v1.
What is Kilometers per Hour?
Kilometers per Hour (km/h) is a unit of speed. Kilometers per hour (km/h) measures speed as the number of kilometers traveled in one hour. It converts directly to meters per second by multiplying by 1000/3600. This unit is standardized internationally for expressing road and vehicle speeds [bipm-si-brochure]. The kilometer per hour unit was adopted alongside the metric system in the 19th century, formalized by the International System of Units (SI) established by the BIPM. It became widespread for transportation speed limits due to metrication efforts in Europe and worldwide [bipm-si-brochure]. Kilometers per hour is the standard speed measurement in most countries, including all European nations, Canada, Australia, and many others. It is used extensively in road traffic regulations, automotive industries, and international transportation standards [nist-si-guide].
What is First Cosmic Velocity?
First Cosmic Velocity (v1) is a unit of speed. The first cosmic velocity is the minimum orbital speed required for an object to maintain a stable circular orbit just above a planet's surface, approximately 7.9 km/s for Earth. It is derived from Newtonian mechanics and gravitational parameters, calculated by √(GM/R) where G is the gravitational constant, M the planet mass, and R its radius [nist-cuu]. The concept of cosmic velocities was formulated by Russian scientist Konstantin Tsiolkovsky in the early 20th century when studying orbital mechanics. It formalized escape and orbital speeds as fundamental limits for spacecraft [nist-cuu]. This velocity is critical in aerospace engineering and space mission design globally, used by space agencies such as NASA, ESA, and Roscosmos. It serves as a baseline for launching satellites into low Earth orbit [nist-cuu].
Common Misspellings
People often search for this conversion using these alternate spellings: kilometres per hour, kmph, kph, kilometer per hour, km/hr, first cosmic velocity, cosmic velocity 1st, cosmic velocity one, orbital velocity first, cosmic velocity 1. All of these refer to the Kilometers per Hour to First Cosmic Velocity conversion.