As shown in the figure below, April enters a race. She runs leftward 100\,\text m100m100, start text, m, end text to her horse, then she rides 500\,\text m500m500, start text, m, end text to her truck, then she drives 1000\,\text m1000m1000, start text, m, end text in a total time of 120\,\text s120s120, start text, s, end text.
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As shown in the figure below, April enters a race. She runs leftward 100\,\text m100m100, start text...
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