Definition

1. Noun:
   • Kilometers per hour: A unit of speed expressing the number of kilometers traveled in one hour. It is a measurement of velocity or speed, commonly used worldwide for road traffic speeds and other measurements of slower-moving objects.

Usage

• As a measurement of speed: Used to indicate how fast something is moving. It is often written with the abbreviation "km/h" or sometimes "kph".
  • The speed limit in this area is 50 km/h.
  • The cyclist maintained an average speed of 25 km/h.

Examples

• Noun:
  • The car was traveling at 110 km/h on the highway.
  • Wind speeds are expected to reach 60 km/h during the storm.
  • The new train has a maximum operating speed of 300 km/h.

Advanced Usage

• In scientific or technical contexts: While km/h is common for everyday use, scientists often use meters per second (m/s) for precise calculations. However, km/h remains standard for transportation.
  • The meteor entered the atmosphere at a staggering 72,000 km/h.

Variants and Related Words

• kph: An alternative abbreviation for kilometers per hour, often used where the slash (/) is not convenient (e.g., on some car speedometers or in informal writing).
  • The sign read "Max Speed 80 kph".
• Kilometer per hour: The full written form of the unit.

Synonyms

• Kilometers per hour is the specific unit. There is no direct single-word synonym. Related concepts include:
  • Speed: The general concept of how fast something moves.
  • Velocity: A vector quantity that refers to the rate at which an object changes its position (includes direction), often measured in similar units.

Related Phrases

• Miles per hour (mph): The imperial unit equivalent for speed, used primarily in the United States and the United Kingdom. Conversion is often necessary (1 mph ≈ 1.609 km/h).
  • To convert 60 mph to km/h, you multiply by 1.609, giving approximately 96.6 km/h.

Noun

1. the ratio of the distance traveled (in kilometers) to the time spent traveling (in hours)