The problem is as follows:

The alternatives on my book:

$\begin{array}{ll}

1.&0.35\hat{k}\\

2.&0.5\hat{k}\\

3.&0.55\hat{k}\\

4.&0.6\hat{k}\\

5.&0.75\hat{k}\\

\end{array}$

For this particular problem I'm stuck at how to use the information given the average velocity and the position. However I recall that when the word average is mentioned it mean this formula?

$\overline{v}=\frac{\vec{r}}{\Delta t}$

But other than that I'm not sure if it applies in this situation. Can somebody offer some help with this question?.

In the figure from below it is shown an observer who has put himself at the center of the coordinate system. He sees an object moving in a circular trajectory. If the average speed between $A$ and $B$ is $\left ( -2\hat{i}+\hat{j} \right )\frac{m}{s}$ and its position on point $A$ is $5\hat{i}\,m$. Find on $\frac{rad}{s}$ the average angular velocity between $A$ and $B$ if the time the object takes to get from $A$ to $B$ is $4\,s$.

The alternatives on my book:

$\begin{array}{ll}

1.&0.35\hat{k}\\

2.&0.5\hat{k}\\

3.&0.55\hat{k}\\

4.&0.6\hat{k}\\

5.&0.75\hat{k}\\

\end{array}$

For this particular problem I'm stuck at how to use the information given the average velocity and the position. However I recall that when the word average is mentioned it mean this formula?

$\overline{v}=\frac{\vec{r}}{\Delta t}$

But other than that I'm not sure if it applies in this situation. Can somebody offer some help with this question?.

Last edited: