Question: 1.8 m- A swimmer exerts an average horizontal backward force of 90 N with his arm during each 1.8 m long stroke. a) What is

1.8 m- A swimmer exerts an average horizontal backward force of 90 N with his arm during each 1.8 m long stroke. a) What is his work output (in Joules) in each stroke? b) Calculate the power output (in Watts) of his arms if he does 140 strokes per minute. Save

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