Question

3. Explain giving examples.
(a) Scalar quantity
(b) Vector quantity​

Answer 1

Scalar quantity-  A scalar or scalar quantity in physics is one that can be described by a single element of a number field such as a real number, often accompanied by units of measurement (e.g. cm). A scalar is usually said to be a physical quantity that only has magnitude, possibly a sign, and no other characteristics.

Vector quantity- Vector, in physics, a quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity’s magnitude. Although a vector has magnitude and direction, it does not have position.

Answer 2

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3. (a) Scalar quantity:- These quantity have only magnitude.

Example- Distance.

3. (b) Vector quantity:- These quantity have magnitude and direction.

Example- Velocity.