Right answer: \(D=\frac{M}{V}\)
Every substance, body or material has mass and volume, however the mass of different substances, bodies or materials occupy different volumes.
This is where density appears as a physical characteristic property of matter that establishes a relationship between the mass of a body or substance and the volume it occupies.
In formal words:
Density \(D\) is defined as the relationship between the mass \(M\) and volume \(V\) of a specific substance or material and is expressed in the following equation:
\(D=\frac{M}{V}\)
The density is a scalar quantity and according to the International System of Units its unit is \(D=\frac{kg}{m^{3}}\)
It should be noted that the density of a body is related to its buoyancy, a substance or body will float on another fluid if its density is lower.
