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I am not really sure how to start this problem, but I do know that the two vehicles have time and distance in common. Since I am finding distance, however, from the stoplight, I first need to find out how much time it took for the car to reach the truck. I don't think I'm suppose to, however, find out how much time it took for the car to reach the truck's velocity, because that does not necessarily mean that the car has caught up with the truck. In fact, the car must exceed the truck's velocity, at some point, in order to catch up with it. I do not think that anything behind the stoplight really matters, save for the acceleration of the car given.

I'm given these equations:

v = u + at

displacement = ut + .5a(t^2)

v^2 = u^2 + 2a(displacement)