Question

we say like my weight is 20(for eg.)KILOGRAMS. but KILOGRAMS is actually the SI unit for mass so why do we use it for weight?

Answer 1

Answer:

WEIGHT is the amount of mass present in a body

hence for weight ,the SI unit of mass is used

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Answer 2

Mass of a substance is the amount of matter present in it while weight is the force exerted by gravity on an object.

mass of a substance is constant whereas its weight may vary from one place to another due to change in gravity

Hope it helps you