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where is propulsive efficiency (typically 0.65 for wooden propellers, 0.75 metal fixed pitch and up to 0.85 for constant-speed propellers), hp is the engine's shaft horsepower, and is true airspeed in feet per second, weight is in lbs.
Lighter than the original version by 500 lb (230 kg), the lithium-ion conversion goes from 0–60 mph (0–97 km/h) in 3.6 seconds. The single gear ratio limits the car's maximum speed to just over 140 mph (230 km/h) at 13,000 rpm with proper gearing, though it has never been tested at greater than the electronic limit of 105 mph (169 km/h).
In the rest of the world, 0 to 100 km/h (0 to 62.1 mph) is used. Present production model performance cars are capable of going from 0 to 60 mph in under 5 seconds, while some exotic supercars can do 0 to 60 mph in between 2 and 3 seconds. Motorcycles have been able to achieve these figures with sub-500cc since the 1990s. [1]
T= -0.26 seconds … 0.71g acceleration averaged over the first foot of travel … T= 0.00 sec … The car crosses 1-foot mark and official timing starts. The car is traveling at 5.9 mph, averaging 1.30 g of longitudinal acceleration. … T= 2.28 sec … The car crosses the official 60-mph mark; Counts, Reese (2016-09-02).
Since one-foot rollout before the timer starts is used by some North American publications, times which exclude the time of the first foot of acceleration are included. [ 1 ] [ 2 ] [ 4 ] All times are independently tested and verified.
0–60 mph (0–97 km/h) in 2.1 seconds for the base model before adding rocket thruster option (without specifying if this includes a 1-foot rollout). [50] Tesla's website later stated 1.9 seconds. [3] Its stated 0 to 1 ⁄ 4 mile (0 to 400 metres) time will be 8.88 seconds, with a top speed above 250 mph (400 km/h).
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Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T