a train takes 50 seconds in going from station a to b and in going from b to another station c also it takes 50 seconds. the distance between a and b is   1 / 2 km and dist. between b and c is 3 / 4 km .if the accleration is uniform, find its magnitude. find also the velocities at a , b and c.

(dont only tell the answer but also specify how to solve it. i will be thankful to u )