The unit vector along $\hat i + \hat j$ is
$\hat k$
$\hat i + \hat j$
$\frac{{\hat i + \hat j}}{{\sqrt 2 }}$
$\frac{{\hat i + \hat j}}{2}$
The angle between vectors $\vec a$ and $\vec b$ is $\frac{\pi }{6}$. The angle between vectors $ - 3\vec a$ and $ 2\vec b$ is
A physical quantity which has a direction
Define scalar and vector physical quantities with their examples.
What is vector ? How it can be represented ?
Explain position and displacement vectors. How the magnitude of vector quantity is represented ?