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Convert Kilometers Per Second to Kilometers Per Hour (km/s to kph) ▶ Conversion Table
How to convert1 kilometer per hour (kph) = 0.000277778 kilometer per second (km/s). Kilometer Per Hour (kph) is a unit of Speed used in Metric system. Kilometer Per Second (km/s) is a unit of Speed used in Metric system. Kilometers Per HourDefinition of Kilometers Per HourKilometers per hour (km/h) is a unit of speed that measures how fast something is moving in terms of kilometers per unit of time. It is commonly used in most countries around the world, except for the United States and some other countries that use the US Standard system of measurement. The speed limit signs on roads and highways are usually expressed in km/h. One kilometer per hour is equal to 0.27777777777778 meters per second, or 3.6 meters per minute. It can also be converted to other units of speed, such as miles per hour, feet per second, or knots, by using appropriate conversion factors. How to Convert Kilometers Per HourTo convert kilometers per hour to other units of speed, we need to multiply or divide by the corresponding conversion factors. For example, to convert kilometers per hour to miles per hour, we need to multiply by 0.6213711922, since there are 0.6213711922 miles in one kilometer. To convert kilometers per hour to meters per second, we need to divide by 3.6, since there are 3.6 seconds in one minute. Here are some examples of how to convert kilometers per hour to other units of length in the US Standard system and the SI system:
Where Kilometers Per Hour Are UsedKilometers per hour are mainly used in most countries around the world that use the SI system of measurement or the metric system. They are often used for car speeds and road signs, as well as for trains, planes, boats, and bicycles. For example, a car may have a speed of 100 km/h, which means that it travels a distance of 100 kilometers in one hour. A road sign may indicate a speed limit of 80 km/h, which means that drivers should not exceed this speed on that road section. A train may have a speed of 300 km/h, which means that it covers a distance of 300 kilometers in one hour. Kilometers per hour are also used in some other fields, such as sports, weather, and astronomy, where the speed or velocity of an object or phenomenon is measured in kilometers per unit of time. History of Kilometers Per HourThe origin of kilometers per hour as a unit of speed can be traced back to the development of the metric system and the kilometer as a unit of length in the late eighteenth century. The kilometer was defined as one ten-thousandth of the distance from the equator to the North Pole along a meridian through Paris. The term kilometer first appeared in English in 1810, but it was not until later in the mid-nineteenth century that the use of kilometers per hour became more widespread; before that, other units such as miles per hour or leagues per hour were preferred for expressing speed. Kilometers per hour have been used ever since as a standard unit of speed for most countries around the world that use the SI system or the metric system. They have also been adopted by some international organizations and conventions, such as the International Civil Aviation Organization and the International System of Units. Example Conversions of Kilometers Per Hour to Other UnitsHere are some examples of how to convert kilometers per hour to other units of speed, using the conversion factors given above:
Kilometers per second: A unit of speedKilometers per second (km/s) is a unit of speed or velocity in the International System of Units (SI). It measures how fast an object is moving by calculating the distance traveled in kilometers divided by the time taken in seconds. For example, if a rocket travels 10 kilometers in 5 seconds, its speed is 2 km/s. How to convert kilometers per secondKilometers per second can be converted to other units of speed or velocity by using simple conversion factors. Here are some common units and their conversion factors:
Where kilometers per second are usedKilometers per second are mainly used in astronomy and space science to measure the speed or velocity of celestial bodies and spacecrafts. For example, the Earth orbits the Sun at an average speed of about 30 km/s. The Moon orbits the Earth at an average speed of about 1 km/s. The International Space Station orbits the Earth at an average speed of about 7.66 km/s. The Voyager 1 spacecraft, which is the farthest human-made object from Earth, travels at a speed of about 17 km/s. The speed of light in a vacuum is about 300000 km/s. Definition of kilometers per secondAccording to the SI definition, one kilometer per second is the speed of a body that covers a distance of one kilometer in a time of one second. Mathematically, it can be expressed as:
where v is the speed or velocity in kilometers per second, s is the distance traveled in kilometers, and t is the time taken in seconds. History of kilometers per secondThe concept of speed or velocity has been studied since ancient times by philosophers and scientists such as Aristotle, Galileo, Newton, etc. The kilometer was originally defined in 1793 by the French Academy of Sciences as one ten-millionth of the distance from the equator to the North Pole along a meridian through Paris. The second was originally defined in terms of the Earth’s rotation as one eighty-six thousand four hundredth of a mean solar day. The combination of these two units resulted in the kilometer per second as a unit of speed or velocity. The kilometer per second was officially adopted as part of the SI system in 1960. Example conversions of kilometers per second to other unitsHere are some examples of converting kilometers per second to other units of speed or velocity:
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Kilometers Per Hour to Centimeters Per Second Kilometers Per Hour to Feet Per Second Kilometers Per Hour to Kilometers Per Day Kilometers Per Hour to Kilometers Per Second Kilometers Per Hour to Knots Kilometers Per Hour to Light Speed Kilometers Per Hour to Meters Per Minute Kilometers Per Hour to Mach Kilometers Per Hour to Miles Per Day Kilometers Per Hour to Miles Per Minute Kilometers Per Hour to Miles Per Second Kilometers Per Hour to Miles Per Hour Kilometers Per Hour to Meters Per Second Kilometers Per Second to Kilometers Per Hour Kilometers Per Second to Light Speed Kilometers Per Second to Mach Kilometers Per Second to Miles Per Minute Kilometers Per Second to Miles Per Second Kilometers Per Second to Miles Per Hour Kilometers Per Second to Meters Per Second Kilometers Per Second to Kilometers Per Hour Knots to Kilometers Per Hour Knots to Miles Per Hour Kilometers Per Hour to Kilometers Per Second Kilometers Per Hour to Knots Kilometers Per Hour to Light Speed Kilometers Per Hour to Mach Kilometers Per Hour to Miles Per Second Kilometers Per Hour to Miles Per Hour Kilometers Per Hour to Meters Per Second Light Speed to Kilometers Per Hour Light Speed to Miles Per Hour Mach to Kilometers Per Hour Mach to Miles Per Second Mach to Miles Per Hour Miles Per Second to Kilometers Per Hour Miles Per Second to Mach Miles Per Hour to Knots Miles Per Hour to Kilometers Per Hour Miles Per Hour to Light Speed Miles Per Hour to Mach Miles Per Hour to Meters Per Second Meters Per Second to Kilometers Per Hour Meters Per Second to Miles Per Hour |
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