Förberedande Mekanik

-16\displaystyle \mathbf{i} - 12\displaystyle \mathbf{j},

64\displaystyle \mathbf{i} +148\displaystyle \mathbf{j},

144\displaystyle \mathbf{i} + 308\displaystyle \mathbf{j},

224\displaystyle \mathbf{i} + 468\displaystyle \mathbf{j}