Problem 9:   A 87.6 kg person starts at rest at the top of a slide that is 14.3 m tall. At the bottom, the person’s speed is 10.8 m/s. How much work (in J) is done by friction?

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Chapter8: Potential Energy And Conservation Of Energy
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 Problem 9:   A 87.6 kg person starts at rest at the top of a slide that is 14.3 m tall. At the bottom, the person’s speed is 10.8 m/s.

How much work (in J) is done by friction? 

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