Question

Characteristics of Scalar and Vector Quantities
What are the characteristics of scalar and vector quantities?

Answer 1

The main characteristic of scalar quantity is it only have a magnitude, e.g.,speed , etc
&
The Main characteristic of vector quantity is it have a magnitude with a direction,
e.g., velocity, force etc

Answer 2

$\bold{Scalar\:Quantity}$

Scalar quantity is the physical quantity which needs or requires only magnitude.There's no need or requirement of direction.

$\bold{Example\::}$

● Distance

● Speed

Distance and speed both are the Scalar quantity as they need magnitude only.

For example - Suresh travelled 27km.

$\bold{Vector\:Quantity}$

Vector quantity is the physical quantity which requires or needs both magnitude and direction.

$\bold{Example\::}$

● Displacement

● Velocity

In both ( Displacement and velocity ) , both magnitude and direction is required.

For example - Suresh travelled 27km from International airport.

$\bold{More\:Information}$

$\bold{Distance}$

The total length of the path travelled by a moving object from its initial position to its final position.

$\bold{Displacement}$

The shortest distance travelled by a moving object from its initial position to its final position.

$\bold{Speed}$

Distance travelled by a moving object in per unit time.

$\implies\bold{Speed = \dfrac{Distance}{Time}}$

$\boxed{\bold{SI\:unit = \dfrac{m}{s}.}}$

$\bold{Velocity}$

Displacement of a object in per unit time is known as velocity.

$\implies\bold{Velocity = \dfrac{Displacement}{Time}}$

$\boxed{\bold{SI\:unit = \dfrac{m}{s}.}}$