Density

Real World Example

Imagine trying to fit all your clothes into a suitcase for a week-long vacation. The challenge of packing efficiently is similar to the concept of density, where you need to consider how much 'stuff' fits into a given space. Just like you might have to decide whether to pack heavier jackets or lighter clothes to make the most of your suitcase's space, density measures how much mass (like the weight of your clothes) fits into a certain volume (like the size of your suitcase).