Metric... well, 5 kg, using a metric calibrated scale. (Technically, kg is a measurement of mass. The weight is about 49 newtons, but the exact value varies with local gravity, about 48.9 to 49.2 N.)
In English units, 11 pounds. (± with local gravity - probably 10.97 to 11.04 pounds)
Gram
about 5 kg
It depends where you lean, the weight of you and the backpack, and the distribution of weight within the backpack.
The weight of an empty backpack could probably be measured in grams. However, a filled backpack would best be measured in kilograms.
None because 5 kilogram is a measure of weight and not distance
The mass of a chapter book is unpredictable. Is it hard bound or soft cover? How many pages is the book and what kind of paper is used?
5 6 13 16
No. Kilogram is a unit of mass, not of weight.
It depends on its weight and the force of weight it is balencing out with.
They both weight a kilogram. Lead has a higher density.
Kilogram is a measurement of weight not speed.
a kilogram is more