Mass

Mass is a measure of the amount of matter in an object, often represented in units like grams or kilograms. It reflects how much "stuff" makes up an object, independent of its location or gravity. For instance, a bowling ball has a greater mass than a basketball because it contains more matter. Mass influences how objects move; more massive objects require more force to change their motion. It's different from weight, which depends on both mass and gravity—an object's weight can change depending on where it is, while its mass remains constant.