- #1

fatteingenting

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A second train starts out from Kristiansand at 9.28 (exactly), direction Stav- anger. The driver immediately falls asleep with his foot on the accelerator, and the train accelerates at a constant rate of 0.100 m/s2, until it reaches the maximum speed of 160 km/h. It then accelerates no longer, but continues towards Stavanger at that maximum speed.

b) At what time, and at which distance from Kristiansand does the second train reach the maximum speed?

I know that the train uses 5760 s to reach max speed (t=(160km/h-0km/h)/0.100 m/s^2)

But how do I calculate the distance?

I tried s=1/2at^2, but that was wrong...