At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.5 m/s2. at the same instant a truck, traveling with a constant speed of 8.7 m/s, overtakes and passes the automobile?

6.96 s

Explanation:

Given:

Assume:

At the moment the automobile and the truck both meat each other the distance travel by both vehicles must be the same.

Since t = 0 s is the initial condition. So, they both meet again at t = 6.96 s such that the automobile overtakes the truck.

your answer would be fusion

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