The position of car A and car B, starting out side by side and traveling along a straight road, is given by s = f(t) and s = g(t), respectively, where s is measured in feet and t is measured in seconds (see the accompanying figure).
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Which car is traveling faster at t?1, t?2 and t?3?
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A. Cars are traveling at the same speed at t?1, car B is traveling faster at t?2, car A is traveling faster at t?3
B. CarAis traveling faster at , carBis traveling faster at t?2, cars are traveling at the same speed at t?3
C. Car A is traveling faster at t?1, car B is traveling faster at t?2, car A is traveling faster at t?3
D. Car A is traveling faster at t?1, cars are traveling at the same speed at t?2, car B is traveling faster at t?3
Answer: D
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