I DON'T RECALL KNOWING THIS
Mass is a property of all physical objects. Weight is pretty much the same as mass for ordinary purposes. Technically weight is the force of gravity acting on mass, but since gravity is constant in...
they call it mass because its the "mass" inside of an object or thing.
Examples of mass include kilogram, gram and mass is also known as weight.
biology
A tree. There's a lot more.Mass is the amount of matter in an object.