Also keep in mind that a kilogram of steel weighs more than a kilogram of feathers... https://www.youtube.com/watch?v=uH0hikcwjIA https://www.youtube.com/watch

Also keep in mind that a kilogram of steel weighs more than a kilogram of feathers... https://www.youtube.com/watch?v=uH0hikcwjIA https://www.youtube.com/watch?v=uH0hikcwjIA