12. [-/2 Points] DETAILS SCALCET9 13.4.015. Find the velocity and position vectors of a particle that has the given acceleration and the given initial velocity and position. a(t) = 2i + 2tk, v(0) = 5i - j, r(0) = j + k v (t ) r(t) Need Help? Read It Submit Answer 13. [-/1 Points] DETAILS SCALCET9 13.4.019.MI. The position function of a particle is given by r(t) = (to, 9t, to - 16t). When is the speed a minimum? t = Need Help? Read It Watch It Master It Submit Answer 14. [-/1 Points] DETAILS SCALCET9 13.3.066. Use the formula T(t) = - B'(t) . N(C) to find the torsion at the given value of t. Ir' (t) r(t) = (sin(t), 9t, cos(t)), t = - Need Help? Read It Submit