Convert mile/hour to Cosmic velocity - third
Please provide values below to convert mile/hour [mi/h] to Cosmic velocity - third [None], or Convert Cosmic velocity - third to mile/hour.
How to Convert Mile/hour to Cosmic Velocity - Third
1 mi/h = 2.67688622754491e-05 None
Example: convert 15 mi/h to None:
15 mi/h = 15 × 2.67688622754491e-05 None = 0.000401532934131736 None
Mile/hour to Cosmic Velocity - Third Conversion Table
| mile/hour | Cosmic velocity - third |
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Mile/hour
Mile per hour (mi/h) is a unit of speed representing the number of miles traveled in one hour.
History/Origin
The mile per hour has been used primarily in the United States and the United Kingdom for measuring speed, especially in transportation, since the adoption of the imperial system. Its usage dates back to the widespread use of miles as a distance measure before metric standardization.
Current Use
Today, mi/h is commonly used in the United States and some other countries to express vehicle speeds, speed limits, and other transportation-related velocities. It remains a standard unit in contexts where the imperial system is prevalent.
Cosmic Velocity - Third
The third cosmic velocity is the minimum speed an object must reach to escape the gravitational pull of the Earth without further propulsion, approximately 11.2 km/s.
History/Origin
The concept of cosmic velocities was developed in the early 20th century to describe the different escape velocities from celestial bodies. The third cosmic velocity specifically relates to Earth's escape velocity, becoming prominent with advancements in astronautics and space exploration.
Current Use
The third cosmic velocity is used in space mission planning to determine the required speed for spacecraft to leave Earth's gravitational influence and reach interplanetary or interstellar space.