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Two Cars Approach Each Other on a Straight and Level

Question 51

Multiple Choice

Two cars approach each other on a straight and level road. Car A is traveling at 75 km/h, due north and car B is traveling at 45 km/h, due south. Both velocities are measured relative to the ground.
-At a certain instant, the distance between the cars is 15 km. How long will it take, in seconds, from that instant for the two cars to meet?


A) 450 s
B) 900 s
C) 720 s
D) 1200 s
E) 1900 s

Correct Answer:

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