mass is matter. basically how much stuff is present. measured in kilograms (kg)
Grams
Tape measure
Kilograms.
kilograms
Units of measure are used to measure anything: length or volume, mass or speed, pressure or force etc.
You would use kilograms (kg) to measure someone's mass in metric units.
grams or other units
Grams
AMU=Atomic Mass Unit
The international unit for mass is the kilogram.
Scientists use atomic mass units (amu) or unified atomic mass units (u) to measure the mass of atoms and their subatomic particles. These units are based on the mass of a carbon-12 atom and are commonly used in the field of nuclear and particle physics.
In gravity calculations, mass is typically measured in units of kilograms (kg).