I don't know how to solve this really easy integral.
suppose: a=2 m/s^2
a = dv / dt
\int^b_a a \ dt = \int^b_a dv
\int^b_a 2 \ dt = v_{b} - v_{a}
2t_{b} - 2t_{a} = v_{b} - v_{a}
v_{b} = v_{a} + 2t_{b} - 2t_{a}
I hope everything is ok up to this point. Then I...