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Kilograms are a measure of mass so if it's both 1kg then it's the same.
a kilogram of bricks
Their mass is 1 kg.
A kilogram of sand takes up much less space than a kilogram of feathers because sand is denser than feathers. Density refers to how much mass is contained in a given volume. Since sand particles are heavier and more compact than feathers, they occupy less space for the same mass.
the gold would have more mass unless there is no gravity like on the moon then they would both fall at the same time.
Kilograms are a measure of mass so if it's both 1kg then it's the same.
a kilogram of bricks
No, both weigh a kilogram
Neither. A Kilogram is a unit of weight or 'heaviness'. If you have a kilo of rocks and a kilo of feathers they weigh exactly the same.
They weigh the same.
They both weigh a kilogram.
The weight of 1 kilogram of feathers has the same weight as one kilogram of gold, because they both weigh the same. Now, they do not have the same volume at all, think about it, to make a kilogram of feathers you need a whole lot of them right? yes is the answer. Now try to picture one kilogram of gold... if you can't, just google it. So a kilogram of gold woudn't have the same volume as the feathers, and the feathers would have the most volume.
Their mass is 1 kg.
Neither of the above BOTH ARE EQUAL
A kilogram of sand takes up much less space than a kilogram of feathers because sand is denser than feathers. Density refers to how much mass is contained in a given volume. Since sand particles are heavier and more compact than feathers, they occupy less space for the same mass.
They all would weigh the same amount, 1 Kilogram.
Both the same. 1000kg = 1 metric tonne.