3.3 Exercise 11

Do the exercise again using analytical techniques and change the second leg of the walk to $\text{25}.\text{0 m}$ straight south. (This is equivalent to subtracting $\mathbf{B}$ from $\mathbf{A}$ —that is, finding $\textbf{R} ' = \textbf{A }–\textbf{ B}$) (b) Repeat again, but now you first walk $\text{25} . \text{0 m}$ north and then $\text{18} . \text{0 m}$ east. (This is equivalent to subtract $\mathbf{A}$ from $\mathbf{B}$ —that is, to find $\mathbf{A} = \mathbf{B} + \mathbf{C}$. Is that consistent with your result?)