Question
For any arbitrary motion in space, which of the following relations are true:
$\text{v}_{\text{average}}=\frac{[\text{r}(\text{t}_2)-\text{r}(\text{t}_1)]}{(\text{t}_2-\text{t}_1)}$
(The ‘average’ stands for average of the quantity over the time interval t1 to t2)
$\text{v}_{\text{average}}=\frac{[\text{r}(\text{t}_2)-\text{r}(\text{t}_1)]}{(\text{t}_2-\text{t}_1)}$
(The ‘average’ stands for average of the quantity over the time interval t1 to t2)