A professor swings a rubber stopper in a horizontal circle on the end of a string in front of his class. He tells Caroline, in the front row, that he is going to let the string go when the stopper is directly in front of her face. Should Caroline worry?
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A professor swings a rubber stopper in a horizontal circle on the
end of a string in front of his class. He tells Caroline, in the front row,
that he is going to let the string go when the stopper is directly in front
of her face. Should Caroline worry?
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