Density is defined as which of the following?

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Multiple Choice

Density is defined as which of the following?

Explanation:
Density measures how much mass is packed into a given amount of space. It is defined as mass per unit volume: density = mass / volume. This means increasing volume while keeping mass the same lowers density, while compressing the same mass into a smaller volume raises density. Common units are kg/m^3 or g/cm^3, with water at about 1 g/cm^3 (1000 kg/m^3) at standard conditions. For example, 2 kilograms in 1 liter has a density of 2000 kg/m^3. The other expressions don’t describe density: volume divided by mass gives inverse density, mass times gravity is weight, and mass times velocity divided by time isn’t a density-related quantity (it’s related to momentum).

Density measures how much mass is packed into a given amount of space. It is defined as mass per unit volume: density = mass / volume. This means increasing volume while keeping mass the same lowers density, while compressing the same mass into a smaller volume raises density. Common units are kg/m^3 or g/cm^3, with water at about 1 g/cm^3 (1000 kg/m^3) at standard conditions. For example, 2 kilograms in 1 liter has a density of 2000 kg/m^3. The other expressions don’t describe density: volume divided by mass gives inverse density, mass times gravity is weight, and mass times velocity divided by time isn’t a density-related quantity (it’s related to momentum).

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