Question

Short note on vector and scalar quantities

Answer 1

Answer:

Vector quantity - The quantity which has both magnitude and direction is called vector quantity.

Examples - flow of wind at the speed of 150m/s in Northwest.

Here magnitude is 150m/s

and direction is northwest.

Scalar quantity- The quantity which has only magnitude is called scalar quantity.

Example- Speed of wind is 150m/s.

Here only magnitude is there which is 150m/s.

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Answer 2

Explanation:

Quantities that can give complete description just with the magnitude are called scalars. Example: 4kg mass, 4ohm resistance.

Quantities that require additional information about the direction of the physical quantity also are called vectors.

For example :moving 2 metres from initial position requires knowledge of the direction of motion (whether left or right or circular) too , to know the final position.(displacement)

In short, vectors differ from scalars as the former has direction along with magnitude while the latter has only magnitude.

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