14. Three force vectors act on a free body at the origin as shown. Place your answers in the boxes provided. (15 points). F1 =4 N F2 = 2.0i+3.1jN F3 = 6.3 N at 35 relative to the positive x-axis a) Report the unit vector in the direction of F3 (in unit vector or i,j,k notation to 4 significant figures). (5 points) b) Calculate the resultant force R, which is the sum of the three forces, F1, F2 and F3 (in unit vector notation or i,j,k notation to 4 significant figures,). (10 points) a) b)