phy. :
force = mass * acceleration
Which means that the units of measurement for force (metric) are:
kilogram * meter
--------------------------
second * second
This means that the "
weight" (pounds) used in America and England is a
force (
mass * the acceleration of gravity) whereas in
Europe (and many other places) the mass (kilograms) alone is used to measure how heavy people are.
The mass unit in the English foot-pound-second system is called (ready for this) : the Slug. (not widely used, or even heard of; it's essentially being phased out) It's equal to 32.2 pounds or 14.6 kilograms.
The force unit in the metric system is : the Newton (widely used and fairly well known.)