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Frequently Asked Questions
How do you convert between MPH and KMH quickly?
Quick conversion: MPH to KMH, multiply by 1.6. KMH to MPH, divide by 1.6 (or multiply by 0.62). For example, 60 MPH = 96 KMH, and 100 KMH = 62 MPH. These conversions are essential for international travel and understanding speed limits.
What speed units are used in aviation and maritime navigation?
Aviation and maritime industries primarily use knots (nautical miles per hour). 1 knot = 1.15078 MPH = 1.852 KMH. Knots are based on nautical miles, which relate to Earth's circumference, making navigation calculations more precise.
How do wind speed measurements work in weather forecasting?
Wind speed is measured in various units: MPH in the US, KMH in most countries, knots for maritime forecasts, and meters per second (m/s) for scientific applications. Weather apps often display multiple units for international users.
What is the speed of sound and how is it measured?
The speed of sound in air at sea level is approximately 343 meters per second (767 MPH, 1235 KMH, or Mach 1). This speed varies with temperature and altitude. Supersonic aircraft speeds are often expressed as Mach numbers (multiples of sound speed).
How do running pace and speed conversions work?
Running pace is often measured in minutes per mile or minutes per kilometer. To convert pace to speed: Speed (MPH) = 60 ÷ pace (minutes per mile). A 7-minute mile pace equals 8.57 MPH or 13.8 KMH.
Why do different countries use different speed units?
Speed units reflect measurement systems: countries using the imperial system (like the US) use MPH, while metric countries use KMH. Aviation uses knots internationally for consistency. Understanding conversions is crucial for international travel and communication.
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