4.0 m above the ground (point A). The block then slides to point B where its speed is 4.5 m/s then slides along the horizontal surface a distance 10 m before coming to rest at point C. (See figure) What is the work done on the block by gravity (in J) along the curved surface between points A and B? What is the work done on the block by friction (in J) along the curved surface between points A and B?  What is the work done on the block by friction (in J) along the horizontal surface between points B and C? What is the coefficient of

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