PrepTest 30, Section 2, Question 9
A running track with a hard surface makes for greater running speed than a soft one, at least under dry conditions, because even though step length is shorter on a hard surface, the time the runner's foot remains in contact with the running surface is less with a hard surface.
A running track with a hard surface makes for greater running speed than a soft one, at least under dry conditions, because even though step length is shorter on a hard surface, the time the runner's foot remains in contact with the running surface is less with a hard surface.
A running track with a hard surface makes for greater running speed than a soft one, at least under dry conditions, because even though step length is shorter on a hard surface, the time the runner's foot remains in contact with the running surface is less with a hard surface.
A running track with a hard surface makes for greater running speed than a soft one, at least under dry conditions, because even though step length is shorter on a hard surface, the time the runner's foot remains in contact with the running surface is less with a hard surface.
Which one of the following, if true, is evidence that the explanation given above is only a partial one?
Dry running conditions can be guaranteed for indoor track races only.
In general, taller runners have greater average step length than shorter runners do.
Hard tracks enhance a runner's speed by making it easier for the runner to maintain a posture that minimizes wind resistance.
The tracks at which the world's fastest running times have been recorded are located well above sea level, where the air is relatively thin.
To remain in top condition, a soft track surface requires different maintenance procedures than does a hard one.
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