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Miles per hour (mph, m.p.h., MPH, or mi/h) is a British imperial and United States customary unit of speed expressing the number of miles travelled in one hour. It is used in the United Kingdom , the United States , and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.
The record is 44.72 km/h (27.78 mph), measured between meter 60 and meter 80 of the 100 meters sprint at the 2009 World Championships in Athletics by Usain Bolt. [4] [5] (Bolt's average speed over the course of this race was 37.578 km/h or 23.35 mph.) [6] Compared to quadrupedal animals, humans are exceptionally capable of endurance, but incapable of great speed. [7]
The Class 395 can operate at a maximum speed of 140 mph (225 km/h) under 25 kV AC overhead electrification on High Speed 1, and 100 mph (160 km/h) on 750 V DC third-rail supply on conventional lines. It is typically formed as a six-car train, although they can be rapidly coupled to one another to form a 12-car train as required.
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.
Excepted [us 1] <10 mph (16 km/h) not allowed: Class 1: 10 mph (16 km/h) 15 mph (24 km/h) Much yard, branch line, short line, and industrial spur trackage falls into this category. Class 2: 25 mph (40 km/h) 30 mph (48 km/h) Branch lines, secondary main lines, many regional railroads, and some tourist operations frequently fall into this class.
As an example, the 2-hour and 7-minute travel time between Helsinki and Turku was expected to drop to 1:28 [1] by 2010; [5] however, the top speed of the train was limited to 220 km/h (140 mph) and the advertised times were never achieved. As of July 2011, 1:44 is the fastest train link between the two cities (on the S126). [6]
Minnesota Vikings first-round draft pick Jordan Addison told the state trooper who clocked him going 140 mph in a 55 mph zone last week that he was speeding because of an emergency involving his dog.
On 10 August 1975 it hit 152.3 mph (245.1 km/h) [16] on the Western Region between Swindon and Reading, setting the UK record. [15] It then set the route record from Leicester to London St. Pancras in 58 minutes 30 seconds on 30 October 1975, at an average speed of just over 101 miles per hour (163 km/h) through this twisty route. [15]