a football field is about 100 meters long.if it takes a person 20 seconds to run its length,how fast were they running?
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a football field is about 100 meters long.if it takes a person 20 seconds to run its length,how fast were they running?
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distance = 100m
time = 20 s
speed = distance/time
= 100m/20s
speed = 5 m/s
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