(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An automobile and train move together along

parallel paths at 38.9 m/s.

The automobile then undergoes a uniform

acceleration of −4 m/s2 because of a red light

and comes to rest. It remains at rest for 71.7 s,

then accelerates back to a speed of 38.9 m/s

at a rate of 3.52 m/s2.

How far behind the train is the automobile

when it reaches the speed of 38.9 m/s, as-

suming that the train speed has remained at

38.9 m/s? Answer in units of m.

Ok i know that the total distance that the train covered in those 71.7s is 2789.13m now what else do i need to do to find out how far behind is the automobile? How can i tell the total distance traveled by the car? is it d = vi(t)+1/2a(t)^2?

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# Homework Help: Position and velocity

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