Question

PROBLEMA TOP -FÍSICA -VECTORES

Answer 1

$\vec x = k(\vec A+\vec B)\to \left\|\vec x\right\| = |k|\cdot\left\|\vec A+\vec B\right\|\\ \\k=-\dfrac{\left\|\vec x\right\|}{\left\|\vec A+\vec B\right\|}\\ \\ \\k=-\dfrac{r/\sqrt{2}}{2r}=-\dfrac{\sqrt{2}}{4}\\ \\ \\\boxed{\vec x = -\dfrac{\sqrt{2}}{4}(\vec A+\vec B)}$