At the instant when the traffic light turns green, an automobile starts with a constant acceleration of 1.8m/s^2 . At the same instant a truck traveling with a constant speed of 8.5m/s overtakes and passes the automobile

A) how far beyond the starting point will the automobile overtake the truck?
B) how fast will the car be traveling at that instant?

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An easy way to get this question without doing any mistake is to make use of graphs and their properties. A v-t graph would be the most useful here.