124 mph on average
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4.40
Moderate speed
"Fast" film registers light more quickly than slow film. Fast film is usually used for low light photography, high speed photography (for sports, etc.) or similar needs.
Yohan Blakes top speed is not known due to lack of split edvidince, but I would estimate 26-27 mph
Carl Lewis' personal best for the 100m is 9.86 s. This works out to an average speed of 10.14 meters per second, or 22.68 mph (36.5 km/h). However, his top speed would have been slightly higher since had to accelerate at the start of the race.