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Which of the following statements is true? A. Instantaneous acceleration is always changing. B. An object that is accelerating is always changing direction. C. An object at rest has an instantaneous acceleration of zero. D. An object that is accelerating is always changing speed.

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D: An object that is accelerating is always changing speed.
User Bircan
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C. because something not moving has a speed of 0. Until a force is acted upon it
User Elliot DeNolf
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