Here, click through to see 13 of our favorite photos of the legendary screen siren that you haven't seen on dorm room posters a zillion times before. With then husband Joe DiMaggio at a Yankees game on April 11, 1961. On set with Tony Curtis in 1958. With then husband Joe DiMaggio at a Yankees game on April 11, 1961.
As of 20 August 2008, Usain Bolt is the the world's fastest man with a 200 meter sprint of 19.30 seconds, giving an average speed of 10.36 meters per second. There are 1609.344 meters in a mile, so 10.36 m/s / 1609.344 m/mi = 0.0064374 miles/second. There are 3600 seconds in an hour, so 0.0064374 mi/s * 3600 s/hr = 23.175 miles/hour. Usain Bolt clocked an *average* speed of 23.175 mph during his world record run, however he may have achieved speeds of 23-27 mph in the early part of the sprint.
His top speed in the 100m race was 43.93 km/h or 27.3 mph. At the 2009 World Championships in Berlin, Bolt ran between the 60 and 80 meter marks in only 1.61 seconds which corresponds to a maximum velocity of 44.72 kilometers an hour. 23.2mph is his average speed over the 200m. That means he started at 0 mph and he got at some point to his top speed which is unknown and 23.2mph is his average. His top speed in the 100m race was 43.93 km/h or 27.3 mph.