Unit vector parallel to the resultant of vectors $\vec A = 4\hat i - 3\hat j$and $\vec B = 8\hat i + 8\hat j$ will be
$\frac{{24\hat i + 5\hat j}}{{13}}$
$\frac{{12\hat i + 5\hat j}}{{13}}$
$\frac{{6\hat i + 5\hat j}}{{13}}$
None of these
If $\vec{P}+\vec{Q}=\overrightarrow{0}$, then which of the following is necessarily true?
If $|\,\vec A + \vec B\,|\, = \,|\,\vec A\,| + |\,\vec B\,|$, then angle between $\vec A$ and $\vec B$ will be ....... $^o$
Two forces of magnitude $8 \,N$ and $15 \,N$ respectively act at a point. If the resultant force is $17 \,N$, the angle between the forces has to be .......
Two forces, each of magnitude $F$ have a resultant of the same magnitude $F$. The angle between the two forces is....... $^o$