what is mass

Mass is a measure of the amount of matter in an object. It is usually measured in grams (g) or kilograms (kg) and is a constant property of an object, regardless of its location in the universe and the gravitational force applied to it. Mass is different from weight, which is the force exerted on matter by the gravitational attraction of Earth. The SI base unit of mass is the kilogram (kg). In physics, mass is not the same as weight, even though mass is often determined by measuring the object's weight using a spring scale. Mass is an intrinsic property of a body and is related to the body's inertia, meaning the resistance to acceleration when a net force is applied. It also determines the strength of the body's gravitational attraction to other bodies