If the resultant of $n$ forces of different magnitudes acting at a point is zero, then the minimum value of $n$ is
$1$
$2$
$3$
$4$
Prove the associative law of vector addition.
What displacement must be added to the displacement $25\hat i - 6\hat j\,\,m$ to give a displacement of $7.0\, m$ pointing in the $X- $direction
Explain subtraction of vectors.