Question

if we have magnitude of a physical quantity and we want to represent it in vector form. which concept we should we use

Answer 1

Answer:

Magnitude is a scalar quantity; it refers just to the size of some quantity. For example quantities like mass, volume, density, distancec only have magnitude, so they are scalars. Now quantities like force, velocity, field have magnitude (size) and direction.

Answer 2

A physical quantity is a property of a material or system that can be quantified by measurement. A physical quantity can be expressed as the combination of a numerical value and a unit. For example, the physical quantity mass can be quantified as n kg, where n is the numerical value and kg is the unit.