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a）A 74-kg boy is surfing and catches a wave which gives him an initial speed of...

a）A 74-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.5 m/s. How much nonconservative work (in kJ) was done on the boy?

kJ

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The non conservative work

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