**In physics, we have studied a lot about physical quantities like work, time, displacement, force, etc. which can be broadly classified into two categories: ** **(1) scalar quantities**

** (2) vector quantities**

__SCALAR QUANTITIES__

**Physical quantities which have magnitude only. Example; mass, speed, volume, work, time, power, energy, etc. are** ** SCALAR QUANTITIES**.

__VECTOR QUANTITIES__

**Physical quantities which have magnitude and direction both, e.g. , displacement, velocity, acceleration, force, momentum, torque, etc.**

**A quantity will say to be a vector if it follows the triangle rule of addition of two vectors. **

And also their a quantity called **tensor quantities** like; moment of inertia, pressure, refractive index,stress.