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Skateboarding against the wind and coasting for a moment, a 79.2-kg skateboarder slows from 9 to 7 m/s. How much work in joules does

Skateboarding against the wind and coasting for a moment, a 79.2-kg skateboarder slows from 9 to ( 7 mathrm{~m} / mathrm{s

Skateboarding against the wind and coasting for a moment, a 79.2-kg skateboarder slows from 9 to 7 m/s. How much work in joules does the wind do on the skateboarder? (Note: The answer should be negative since the skateboarder slows down)

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