A 73-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 1.60 m, and ends with a speed of 8.5 m/s. How much nonconservative work was done on the boy?

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A:

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Q: Its a solved question but i cant read handwriten . please type it

A: We find the required parameters.

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A: Please see the answer below

Q: or

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Q: . 26- Show that if the magnitude of a vector A is constant then A dà dt = 0. (Hint: A A = A²)

A: Since you have posted multiple questions according to guidelines i will solve only the first one.

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Q: its not 2.42

A: