6 ft 13/12 F-80 lb 0 4 ft -50 lb Part B Give the position vector of line segment AC with A being the vector tail. Part C What is the length of the line segment AC? Part D Express F as a Cartesian Coordinate Force vector (in i,j,k form) including units. Part E Assume F2 = 13.4i-26.7j-40.1k lb Find the magnitude of the resultant of F1 + F2 in Cartesian vector form.