A particle begins from rest at a point +10.0 m from the origin at time t = 0 s, and begins accelerating at a constant 2 m/s2 in the negative direction. At time t = 4 s, the particle has reached a certain speed; it stops accelerating, and continues traveling with that same speed until t = 7 s. What is its position relative to the origin at t = 7 s?

College Physics
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ISBN:9781305952300
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Chapter1: Units, Trigonometry. And Vectors
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A particle begins from rest at a point +10.0 m from the origin at time t = 0 s, and begins accelerating at a constant 2 m/s2 in the negative direction. At time t = 4 s, the particle has reached a certain speed; it stops accelerating, and continues traveling with that same speed until t = 7 s. What is its position relative to the origin at t = 7 s? 

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