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Why Is It Easier for a Runner to Move the Recovery

Question 3

Multiple Choice

Why is it easier for a runner to move the recovery leg forward more rapidly when it is flexed than when extended?


A) mass of the leg is greater when it is flexed
B) mass of the leg is less when it is flexed
C) moment of inertia of the leg is greater when leg is flexed
D) moment of inertia of the leg is less when leg is flexed

Correct Answer:

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