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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.
The 40-yard dash is a sprint covering 40 yards (36.576 m). It is primarily run to evaluate the speed and acceleration of American football players by scouts, particularly for the NFL draft but also for collegiate recruiting. A player's recorded time can have a heavy impact on his prospects in college or professional football.
One such example exists on the ice roads in Estonia, where it is advised to avoid driving at the speed of 25–40 km/h (16–25 mph) as the vehicle may create resonance that may in turn induce the breaking of ice. This means that two sets of speeds are allowed: under 25 km/h (16 mph) and between 40–70 km/h (25–43 mph). [68]
The “lil 40” that the Texas Longhorns wide receiver was referencing wasn’t, actually, so little. Worthy had run a record-breaking 4.21-second 40-yard dash just 13 hours before he unleashed ...
University of Texas wide receiver Xavier Worthy broke the NFL record for the fastest 40-yard dash on Saturday at the 2024 NFL Combine in Indianapolis, Indiana.. The 20-year-old Worthy ran a time ...
For example, a speed of 60 miles per hour (97 km/h) corresponds to stopping distance of 4 seconds' travel at 60 mph. Drivers that require additional perception-reaction time, such as novices, elderly, or those in complex or adverse environments, can benefit by adding additional seconds. [183] [184]
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On non-freeway roads, speed limits are generally held at 55 mph (89 km/h) for rural four-lane roads, 55 mph (89 km/h) for rural two-lane roads, 45–55 mph (72–89 km/h) for urban four lane roads and 40–45 (sometimes, but rarely, 50 mph) mph (64–72 km/h) for urban two lane roads, 35–45 mph for roads in commercial business areas, 30−35 ...