Hiya, i have a very simple question! dunno how to work it out so i'd appreciate if someone showed me step by step and explained it.

-A, B and C are three points on a straight road such that AB = 80m and BC = 60m. A car travelling with uniform acceleration passes A, B and C at times t = 0, t = 4s and t = 6s respectively. Modelling the car as a particle find its acceleration and its velocity at A.

-the answers are: 3 1/3 ms^(-2), 13 1/3 ms^(-1)

thx!