A train starts from rest and accelerates uniformly in a straight line until, after 10s, it attains a speed of 40m/s. It then continues to accelerate at the same rate until it has traveled a total distance of 500m. What is the distance travled by the train during the first 10s? What distance did the train travel during the third second? Ok this question is very confusing to me. I know that vi=0 and vf=40 and distance= 500m. The thing i dont get is the first sentence. If u start from rest which is vi=0, how do u accelerate in a straight line to 10s. The thing i m guessing is if u go 4m/s from 0s to 10s. Then from 10s-22s, u travel at 40m/s. The first 10 seconds would equal to 20m, and the last 12 seconds would equal 480 m for a total of 500m. Does anyone know if i m doing this the right way because i feel that i got the beginning part messed up. So for the first question i would think it is 20meters, and for the second question i think it is 12meters. Anyone can help?