Convert Cosmic velocity - third to foot/hour
Please provide values below to convert Cosmic velocity - third [None] to foot/hour [ft/h], or Convert foot/hour to Cosmic velocity - third.
How to Convert Cosmic Velocity - Third to Foot/hour
1 None = 197244016.833064 ft/h
Example: convert 15 None to ft/h:
15 None = 15 × 197244016.833064 ft/h = 2958660252.49596 ft/h
Cosmic Velocity - Third to Foot/hour Conversion Table
| Cosmic velocity - third | foot/hour |
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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.
Foot/hour
Foot per hour (ft/h) is a unit of speed representing the distance of one foot traveled in one hour.
History/Origin
The foot per hour has historically been used in engineering and construction to measure slow speeds, especially in contexts where imperial units are standard. Its usage has declined with the adoption of metric units and more common speed measurements like meters per second or miles per hour.
Current Use
Today, foot per hour is rarely used in practical applications but may still appear in specialized fields such as certain engineering, construction, or scientific contexts where imperial units are maintained.