Answer:
11.4329 m/s
Explanation:
The average rate of speed is found by dividing the distance covered by the time it took to cover that distance.
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speed = distance/time
speed = (300 m)/(26.24 s) = 11.4329 m/s
The sprinter's average speed was 11.4329 meters per second.
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Additional comment
The world record time was 30.81 seconds for 300 m, set in 2017. That is 9.7371 m/s.