<Li> Greek: "χιλιόμετρα ανά ώρα" (a different script). </Li> <P> In 1988 the United States National Highway Traffic Safety Administration promulgated a rule stating that "MPH and / or km / h" were to be used in speedometer displays . On May 15, 2000 this was clarified to read "MPH, or MPH and km / h". However, the Federal Motor Vehicle Safety Standard number 101 ("Controls and Displays") allows "any combination of upper - and lowercase letters" to represent the units . </P> <Ul> <Li> 3.6 km / h ≡ 1 m / s, the SI unit of speed, metre per second </Li> <Li> 1 km / h ≈ 0.277 78 m / s </Li> <Li> 1 km / h ≈ 0.621 37 mph ≈ 0.911 34 feet per second </Li> <Li> 1 knot ≡ 1.852 km / h (exactly) </Li> <Li> 1 mile per hour ≡ 1.609344 km / h (~ 1.61 km / h) </Li> </Ul> <Li> 3.6 km / h ≡ 1 m / s, the SI unit of speed, metre per second </Li>

One kilometer is equal to how many minutes