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A block of weight W slides down an inclined plane of angle θ with initial velocity { v }_{ 0 } . Determine the velocity of the block at time t1 if the coefficient of kinetic friction between the block and the plane is μk. Given: W = 20 lb , { t }_{ 1 } = 3 s , θ = 30 deg , { μ }_{ k } = 0.25 , { v }_{ 0 } = 2 ft s , g = { 32.2ft/s }^{ 2 }

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