ce amath--integration

1. In the following question s,v,a ant t respent the displacement, velocity, accleration and time of a particle moving in a straight line.
a)If v=3√t+2, find s given that s=5 when t=0
b) If a=12t^2+6t, find s given that s=0, v=-3 when t=0
c) If v=2t-4, find the distance that the particles moves
(1)from t=0 to t=2
(2)from t=0 to t=5