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For a school project. Robert records the motion of a sail and plots a position-time graph of the data
From the graph the speed of the snail in the first 20 seconds is centimeter/second. After that, the snal remains in the same place for
seconds
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Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.