The unit vector along $\hat i + \hat j$ is
$\hat k$
$\hat i + \hat j$
$\frac{{\hat i + \hat j}}{{\sqrt 2 }}$
$\frac{{\hat i + \hat j}}{2}$
Find the unit vector of a vector whose co-ordinates are $(8,\, 6)$.
Classify the given physical quantities in vector and scalar. Position, speed, velocity, pressure, acceleration, temperature, force, work, energy.
The expression $\left( {\frac{1}{{\sqrt 2 }}\hat i + \frac{1}{{\sqrt 2 }}\hat j} \right)$ is a
A vector is added to an equal and opposite vector of similar nature, forms a ........