S(t) =4/3t^3-1/2t^2+2
V(t) = S " (t) = (4/3t^3 - 1/2t^2 +2) " = 4/3 *3t^2 - 1/2 *2t +0 = 4t^2 - t
V " (5) = 4*5^2 - 5 = 100-5 = 95
S(t) =4/3t^3-1/2t^2+2
V(t) = S " (t) = (4/3t^3 - 1/2t^2 +2) " = 4/3 *3t^2 - 1/2 *2t +0 = 4t^2 - t
V " (5) = 4*5^2 - 5 = 100-5 = 95