Question

define mass in brief

Answer 1

Mass is a measure of the amount of matter in an object. Mass is usually measured in grams (g) or kilograms (kg).

Answer 2

, mass is not the same as weight, even though mass is often determined by measuring the object's weight using a spring scale, rather than balance scale comparing it directly with known masses. An object on the Moon would weigh less than it does on Earth because of the lower gravity, but it would still have the same mass. This is because weight is a force, while mass is the property that (along with gravity) determines the strength of this force.