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18. The diagram shows two cars at time t 0. At this instant, car A hasa velocity of 35.0 mph and is heading due north, while car B is one mile east of car A, and it has a velocity of 45.0 mph due east. The roads are long and straight, and the posted speed limi is 55.0 mph. At the instant shown, car A starts to speed up at a constant rate of 11.0 fis2, and car B starts to speed up at a constant rate of 10.0 fs2. For each car, once the posted speed limit is reached the acceleration ceases. Calculate how far apart the cars are at the first instant when both their speeds are 55.0 mph.
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