16.6323mph
100 meters is 0.06214 miles
13.45 seconds is 0.0037361 hours
Find the answer by using the proportion........
0.06214...........X
_________ = ___
0.0037361.......1
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100 meters per 15.00 seconds = 14.91 mph
100 meters / 11 seconds = 20.336 mph (rounded)
100 meters/14.00 seconds (1 mile/1609 meters)(3600 seconds/1 hour) = 15.982 miles per hour
(100 meters/9.98 sec) x (1 mile/1,609.344 meters) x (3,600 seconds/1 hour) = 22.4 mph
Traveling 100 meters in 80 seconds equates to an average speed of 2.79 miles per hour.