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A middle school is holding a class competition. Zhang Mingming is a sprinter. 100 meter race, his finish speed in 6.25 seconds is10.4 m \ s.
Solution: From the meaning of the question, the displacement of the 100-meter race is s= 100 m, and the time consumption is t= 12.5.
So the average speed formula V (with a horizontal line on it) = s/t =100/12.5m/s = 8m/s.
So the average speed of his whole process is12.5 m/s.