The magnitude of a given vector with end points $ (4, -4, 0)$ and $(-2, -2, 0)$ must be
$6$
$5\sqrt 2 $
$4$
$2\sqrt {10} $
Explain commutative law for vector addition.
If two vectors $2\hat i + 3\hat j - \hat k$ and $ - 4\hat i - 6\hat j + \lambda \hat k$ are parallel to each other then value of $\lambda$ be
The resultant of two vectors at an angle $150^{\circ}$ is $10$ units and is perpendicular to one vector. The magnitude of the smaller vector is ....... units
The vector sum of two forces is perpendicular to their vector differences. In that case, the forces
Two forces of magnitude $3\;N$ and $4\;N $ respectively are acting on a body. Calculate the resultant force if the angle between them is $0^o$