What is Mass?


Simple Definition:

Mass is the amount of matter that an object contains [Matter refers to the material an object is made of]. In other words, mass is a measure of how much “stuff” is in an object. Mass is usually measured in grams or kilograms. For example, a big rock has more mass than a small pebble. The mass of an object can also be changed if more matter is added to it or if matter is removed from it.

Very Simple Definition:

Mass is a measure of how much stuff is in something. For example, a truck has more mass than a bicycle because it has more stuff in it. We can measure mass using units like grams or kilograms.

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