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Speed limit sign in the Republic of Ireland, using "km/h.". The SI representations, classified as symbols, are "km/h", "km h −1" and "km·h −1".Several other abbreviations of "kilometres per hour" have been used since the term was introduced and many are still in use today; for example, dictionaries list "kph", [3] [4] [5] "kmph" and "km/hr" [6] as English abbreviations.
The time it takes a vehicle to accelerate from 0 to 60 miles per hour (97 km/h or 27 m/s), often said as just "zero to sixty" or "nought to sixty", is a commonly used performance measure for automotive acceleration in the United States and the United Kingdom. In the rest of the world, 0 to 100 km/h (0 to 62.1 mph) is used.
By 0–100 km/h (62 mph) time (3.0 s or less) [ edit ] These are standing start (no rollout allowed) acceleration times measured by independent, reliable sources (thus these are not precisely comparable with the first table where even 9.5-96.6 km/h times are allowed).
Notes specify if test was 0 to 60 mph (0 to 97 km/h) or 0 to 100 km/h (0 to 62 mph). For comparison, an object in free fall, without any air resistance, near the Earth's surface accelerates from 0–100 km/h in 2.83 seconds and from 0–60 mph in 2.73 seconds.
A stack of rectangular speed limit signs in the United States German border crossing sign showing 50 km/h (31 mph) limit in built-up areas, 100 km/h (62 mph) in rural areas, but a legal advisory 130 km/h (81 mph) limit for the Autobahn (motorway), increasing liability in the case of an accident from driving faster [175]
Pyroclastic flows sweep down the flanks of Mayon Volcano, Philippines, in 2018. A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) [1] is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that flows along the ground away from a volcano at average speeds of 100 km/h (30 m/s; 60 mph) but is capable of reaching speeds up to ...
5 km/h up to 100 km/h, 5% above 100 km/h for fixed cameras; doubled for mobile radars Georgia [30] 60 (20 in residential areas) 110: 80: 90: 70: 10 Germany [31] 50: None, recommended speed 130 km/h. [fn 7] 80–100 [fn 8] 100 60 (trucks) 80: 3 km/h up to 100 km/h, 3% over; differs for different speeding control methods Greece [32] 50: 110 ...
Uncrewed torpedo speed claims range from 60 knots (110 km/h; 69 mph) for the British Spearfish torpedo [64] to 200 knots (370 km/h; 230 mph) for the Russian VA-111 Shkval. [ 65 ] ^ a b Ground effect vehicles (a.k.a. "Wing-In-Ground effect vehicles") are classified as maritime vessels, rather than aircraft, by the International Maritime ...