Activity 4: Graphical Method of Addition of Vectors in Two Dimensions (2-D)
Unit vector of $ \overrightarrow{r}=3\hat{i}+2\hat{j}-2\hat{k}$
A.$\frac{3\hat{i}}{\sqrt{17}}+\frac{2\hat{j}}{\sqrt{17}}-\frac{2\hat{k}}{\sqrt{17}}$
B.$\sqrt{17}$ unit
C.$\sqrt{15}$ unit