__Scalar Quantities:__

The scalar quantities are known as scalars. This quantity has magnitude only such as length, mass, time, distance, volume, density, temperature, speed, etc.

__Vector Quantities:__

The vector quantities known as vectors are those quantities that have both magnitude and direction such as force, displacement, velocity, acceleration, momentum, etc.

## Features of Vector Quantities:

**1. Representation of a Vector:** A vector is represented by a directed line. It may be noted that the length OA represents the magnitude of the vector OA’. The direction of the vector is OA’ is from O to A. It is also known as vector P.

**2. Unit Vector:** A vector whose magnitude is unity. It is known as a unit vector.

**3. Equal Vectors:** The vectors which are parallel to each other and have the same direction and equal magnitude are known as equal vectors.

**4. Like Vectors:** The vectors which are parallel to each other and have the same sense but unequal magnitude are known as like vectors.