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1. If there is a maximum frictional force between your shoe and the track, does that set a limit on how fast your can start (accelerate) in sprint? Does that mean you cannot have more than a certain acceleration even if your have increduly strong leg muscles? What is done to solve this problem?

2. Explain why friction is important to running. Why are clearts used in football, soccer, and other sport?

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1. Yes, if there is a maximum friction force between the shoe and the track, the starting acceleration in the sprint is limited by it. In order to solve this problem, frictional force is reduced by cleats in soccer shoes, ...

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