Kilograms for a row boat but a ton for larger vessels.
Gram.
The metric (SI) unit for weight is the newton, since weight is a force. When people talk about "weight", they sometimes actually mean "mass". The unit for mass is the kilogram.
Tonnes
Gram.
a ruler
Meters
grams
The metric standard unit of mass is the kilogram (Kg).
The basic metric unit of mass is the gram (g).
The gram is a metric unit of mass.
Milligrams.
The SI unit for mass in the metric system is the kilogram.
The basic unit of mass in the metric system is the gram.
A neutron is an electrically neutral subatomic particle. A Newton is the metric unit of force. A Kilogram is the metric unit of mass. We have no idea what a 'newtron' is.
The SI (metric) unit for mass is the kilogram.
The standard unit in the metric system for measuring mass is the kilogram (kg).
A metric unit of measurement for mass is called a gram.