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The average man can sprint 15. 9 miles per hour. The record holder for the fastest 100 meter is Usain Bolt. He ran at a foot speed of 27. 44 miles per hour.
During Usain Bolt's World record 100m sprint (9.58) at the 2009 Athletic Championships in Berlin, Bolt covered reached his top speed of 12.27 m/s or 27.45 miles per hour at the 65 meter mark.
The fastest speed of a human running was set by Maurice Greene, who achieved a sprint speed of 26.7 mph.
If you consider Usain Bolt's record in the Beijing Olympics: 19.30 seconds = 10.36 metres per second =23.32 MPH
the answer is 15 km/h
40 meter sprint
Cheetah, cheetah is the fastest mammal in the word with a top speed of on avg, 75mph.
About 60 km/h for track cyclists.
Between 3-5 secs depending on your speed
speed = distance/time
Fastest person is Usain Bolt of Jamaica who holds the world record for the 100 meter dash at 9.578 seconds set on 8/09. World fastest car that you can buy and drive on the street is the Bugatti Veyron. Top speed 267 MPH 0-60 in 2.5 seconds. Price $1,700,000. Worlds fastest animal is the Cheetah. Top speed around 70 mph. 100 meter dash in 6.13 seconds.
You need to be more specific before this can be answered.