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A body like that shown in Fig. 14.2 oscillates back and forth. For each of the following values of the body’s x-velocity vx and x-acceleration ax, state whether its displacement x is positive, negative, or zero. (a) vx > 0 and ax > 0; (b) vx > 0 and ax < 0; (c) vx < 0 and ax > 0; (d) vx < 0 and ax < 0; (e) vx = 0 and ax < 0; (f) vx > 0 and ax = 0.
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