Yes, but which would be most difficult to lift on your own. Could you lift 1kg of cotton? Perhaps even harder 1kg of feathers unless compressed. Oh why did I start this train of thought......
They both weigh the same, but i'll wager that 1kg of cotton takes up a lot more space
You can't make a proper mattress out of iron and it'll tear up the cotton gin , I like my sleep to be Comfie .
Why is this question even worth answering? You just enjoy attention.
iron it hurts more when it's thrown at you
Trick question... they are the same! A kilogram is a measure of mass, which is directly proportional to weight. Though a kg of iron would be much smaller (lower volume) and a kg of cotton would be larger (higher volume), they are exactly the same weight.
Both are the same.
One kg is one kg.