Question
A racetrack is in the shape of a rectangle with length of 48 meters and area of 6000 m 2. A car takes 10 seconds to make one lap around the perimeter of this track. If the car and a person whose speed is 5.4 m/s, started moving at the same time along the perimeter of the track but in opposite directions, then find the distance between the car and the person, 7seconds before they cross each other.
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