15. [-76.25 Points) DETAILS WANEFMAC7 13.1.061. The velocity of a particle moving in a straight line is given by v(t) = 2 + 1. (a) Find an expression for the position s after a time t. (Use C for the constant of integration.) s(C) (b) Given that s = 4 at time t = O, find the constant of integration C. C = Find an expression for sin terms of t without any unknown constants. s(t) = Need Help? Read It