Yefim S. answered 04/18/23
Math Tutor with Experience
v(t) = ∫(t3 + 9t2 + 27t + 27)dt = t4/4 + 3t3 + 27/2t2 + 27t + C1; v(0) = C1 = 22; v(t) = t4/4 + 3t3 + 27/2t2 + 27t + 22;
s(t) = ∫(t4/4 + 3t3 + 27/2t2 + 27t + 22)dt = t5/20 + 3t4/4 + 9/2t3 + 27/2t2 + 22t + C2; s(0) = C2 = 77;
s(t) = t5/20 + 3t4/4 + 9/2t3 + 27/2t2 + 22t + 77.