A 3.0 kg piece of wood slides on the surface shown in the accompanying figure (Figure 1). All parts of the surface are frictionless, except for a 30-m-long rough segment at the bottom, where the coefficient of kinetic friction with the wood is 0.20. The wood starts from rest 4.0 m above the bottom. Figure Wood Rough bottom 1 of 1 Y Part A Where will the wood eventually come to rest? Express your answer in meters. 8= Submit Part B X Incorrect; Try Again ΫΠ ΑΣΦ W = Previous Answers Request Answer Submit How much work is done by friction by the time the wood stops? Express your answer in joules. 1951 ΑΣΦ Request Answer ? ? J m

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