What is the unit used to measure weight in science?

Answer 1

Traditional pounds are used to measure weight, but ounces and tons can be used as well.
the unit which is used to measure the weight is the newton or "N"
'Weight' is the name given to the force due to the pull of gravity acting upon an object, and is measured in newtons.

All matter has what we call 'mass' which is constant, and the pull of gravity acting on it gives it what we call 'weight' which varies -depending upon where in the world you live. In the SI System, to measure mass we use an unit called the 'kilogram' whereas, to measure weight we use an unit called the 'newton'.

A newton = 0.102 kilogram force, which is the same force as 0.224 pound force. A kilogram force is an obsolete metric unit of force.

The distinction between 'mass' and 'weight' becomes very important if you are a physicist or an engineer , and many formulas used by these professionals to make calculations, require the inclusion of the force of gravity at the place where these calculations will be made.