Chem & Physics Quiz
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A cart's motion is recorded in a teaching lab. At t=0t=0 s, v=+1.0 m/sv=+1.0\ \text{m/s}. At t=2t=2 s, v=−1.0 m/sv=-1.0\ \text{m/s}. Which statement best describes what must have occurred at some time between 0 s and 2 s?
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