### Determine the average speed of the fist during the hook

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##### Reference no: EM13536001

A hook in boxing primarily involves horizontal flexion of the shoulder, while maintaining a constant angle at the below. During this punch, the horizontal flexor muscles of the shoulder contract and shorten at an average speed of 75 cm/s. They move through an arc length of 5 cm during the hook, while the fist moves through an arc length of 100 cm. What is the average speed of the fist during the hook?

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