A car on a straight road starts from rest and accelerated at 1.0 meter per second ^2 for 10. Seconds. Then the car continues to travel at a constant speed for an additional 20. Seconds

To find distance use Vf = Vi + at in order to find final velocity. this means that Vf = 10 ... then use Vf^2 = Vi^2 + 2ax (x = distance). This means that the distance traveled during acceleration was 50m. then it traveled at 10m/s for 20 seconds. this means that it traveled 200m. 200+50=250m total.