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How fast is 80 kilometers per hour?

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It's about one-fourth as fast as a Porsche 911
In other words, 80 kilometers per hour is 0.2430 times the speed of a Porsche 911, and the speed of a Porsche 911 is 4.120 times that amount.
(for Porsche 911 Type 997 GT2, 2007 model)
The Porsche 911 GT2 has a top speed of 329 kph. It takes just 7.4 seconds for the GT2 to accelerate to 161 kilometers per hour.
It's about one-fourth as fast as The CRH (train)
In other words, 80 kilometers per hour is 0.230 times the speed of The CRH (train), and the speed of The CRH (train) is 4.30 times that amount.
(a.k.a. Hexie Hao, 和谐号, a.k.a. 和諧號, a.k.a. Héxié Hào, a.k.a. "Harmony")
The CRH-3 train which runs on China's Beijing-Tianjin Intercity Railway are capable of speeds up to 350 kph. Theses train can make the 120 km (74 mi) journey from Beijing to Tianjin in about 30 minutes.
It's about one-fifth as fast as a Peregrine Falcon
In other words, 80 kilometers per hour is 0.2060 times the speed of a Peregrine Falcon, and the speed of a Peregrine Falcon is 4.850 times that amount.
(a.k.a. Peregrine, a.k.a. Duck Hawk, Falco peregrinus)
The Peregrine Falcon can reach speeds of up to 389 kph when diving. Falcons are sometimes sent to scare smaller birds away from airports to improve air traffic safety and were used in World War II to intercept carrier pigeons used by enemy forces.
It's about eight times as fast as a Crocodile
In other words, 80 kilometers per hour is 8.20 times the speed of a Crocodile, and the speed of a Crocodile is 0.120 times that amount.
(American Crocodile, Crocodylus acutus) (swimming speed)
An American crocodile can reach speeds in the water of up to 10 kph. On land, larger crocodiles can "gallop" when fleeing danger at speeds of up to 20 kph.
It's about eleven-and-a-half times as fast as Michael Phelps
In other words, 80 kilometers per hour is 11.440 times the speed of Michael Phelps, and the speed of Michael Phelps is 0.087413 times that amount.
(at the Beijing Olympics, 2008; 200 m freestyle) (a.k.a. Michael Fred Phelps) (swimmer; 1985-)
Setting a world record, Michael Phelps swam the 200 m freestyle in 1:42.96 for an average speed of 6.993 kph. Phelps would go on to win nine gold medals individually in the 2008 Olympics - more than all but eight of the competing nations.
It's about one-fifteenth as fast as The Speed of Sound
In other words, the speed of The Speed of Sound is 15.40 times 80 kilometers per hour.
(in dry air at 20°C)
The speed of sound in dry air at 20°C (68°F) is 343 m/s. Air is a relatively poor acoustic conductor, however, as sound will travel at speeds of between 5,390 kilometers per hour to 5,620 kilometers per hour in water, depending on its salinity.
It's about seventeen times as fast as Walking Pedestrians (in Manhattan)
In other words, the speed of Walking Pedestrians (in Manhattan) is 0.059 times 80 kilometers per hour.
(Manhattan; average speed; 8,978 person-sample)
A 2006 Study by the New York City Department of City Planning found that pedestrians in that city walk at an average rate of 4.70 kilometers per hour. Pedestrians wearing headphones, the study went on to find, walk at a slightly faster 5.10 kilometers per hour