Short answer: Metric System - grams; English system - pounds
Long answer:
There are two different measuring systems. One which mainly the US uses, the English units of measurements (feet, pounds, and gallons). Another is the Metric System, which the res of the world uses (meters, liters, grams).
In the English system mass is measured in pounds. This is different than what people normally think of as pounds. When some on says "That weighs X pounds" they are saying it weighs the mass * acceleration due to gravity (32.17 ft/s2 ). This weight is in a unit called pound force.
The Metric System is a lot easier. Mass is measured in grams, the weight would be measured in Newtons.
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The appropriate metric unit to measure the mass of a lawn mower would be kilograms (kg). This unit is commonly used for measuring the weight of objects in metric system.
You would use kilograms (kg) to measure someone's mass in metric units.
The metric units used to measure mass are grams (g) and kilograms (kg).
The most appropriate metric unit to measure the mass of a concrete block is kilograms (kg).
go to Google to find out the answer because wiki. doesnt have it im real sorry i couldn't help. good luck !go to Google to find out the answer because wiki. doesnt have it im real sorry i couldn't help. good luck !