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I need the steps for this problem. If a runner (perpendicular area = 0.6 m2; fluid...

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Physics

I need the steps for this problem. If a runner (perpendiculararea = 0.6 m2; fluid density = 1.14 kg/m3; Cd = 0.5) completes amarathon (26.2 miles) in three hours, while running against a10-mph headwind throughout the race, how much more work will shehave performed against the air, relative to completing the marathonin the same time on a still day (no wind)? Answer: ~395 KJ

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