The best unit of measurement to determine the mass of a book is grams.
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Weigh? mass in kilograms or pounds.
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.
grams most oranges weigh between 200 and 800 grams
Mass is measured in grams.
the mass of your book has about one killogram how do i no cause im cool