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A cart attached to a spring is displaced from equilibrium and then released. There is no friction. A graph of displacement as a function of

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A cart attached to a spring is displaced from equilibrium and then released. There is no friction. A graph of displacement as a function of time for the cart is shown. The arrows and signs above the cart indicate the positive and negative directions for the position of the cart. Displacement. cm B 2 CH C G 16 Time, s D 12 F/14 For each question below, choose from the labeled points above, or state "none." (a) At which point or points is the acceleration positive? Explain your reasoning

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