Which of the following forces cannot be a resultant of $5\, N$ and $7\, N$ force...........$N$
$2$
$10$
$14$
$5$
Two vectors $\vec A$ and $\vec B$ have equal magnitudes. The magnitude of $(\vec A + \vec B)$ is $‘n’$ times the magnitude of $(\vec A - \vec B)$. The angle between $ \vec A$ and $\vec B$ is
If the sum of two unit vectors is a unit vector, then magnitude of difference is
The resultant of $\overrightarrow P $ and $\overrightarrow Q $ is perpendicular to $\overrightarrow P $. What is the angle between $\overrightarrow P $ and $\overrightarrow Q $