Question

hello,

what are scalar and vector quantities?

{std 9 question}

Answer 1

scalar or scalar quantity in physics is a physical quantity that can be described by a single element of a number field such as a real number, often accompanied by units of measurement. A scalar is usually said to be a physical quantity that only has magnitude and no other characteristics.

Answer 2

$\huge\bold{Scalar\: Quantity}$

=> It has only magnitude but no specific direction

=> It can solve by normal laws of algebra.

Eg:- Work done, Distance, speed etc.

$\huge\bold{Vector\: Quantity}$

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=> It has magnitude as well as direction.

=> It is only solved by triangle laws of vector addition and multiplication.

Eg:- Displacement, Force, velocity etc.

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