Physics

Problem

A particle moves from position

\mathbf{r}_1=4\hat{i}+2\hat{j}\,\text{m}

\mathbf{r}_2=-1\hat{i}+6\hat{j}\,\text{m}

. What is the displacement

\Delta\mathbf{r}=\mathbf{r}_2-\mathbf{r}_1

? a)

5\hat{i}+4\hat{j}\,\text{m}

3\hat{i}+8\hat{j}\,\text{m}

-5\hat{i}+4\hat{j}\,\text{m}

-5\hat{i}-4\hat{j}\,\text{m}