This depends on the assortment of plastic or paper.
Yes
because it is lighter
This may not be correct, but metal/plastic is a special plastic like fiber that is even stronger then metal and lighter, too
paper
Plastic is less dense than glass, so normally a plastic cup is considerably lighter than a glass cup, although in theory a very small glass cup could weigh less than a very large plastic cup.
you fold the paper to look like a lighter
Between rock and paper, paper is lighter. However if dropped from same height they do fall at the same speed.
depends if the plastic is heavier or lighter than water and if its hold air which is lighter than water
It's lighter and more flexible than coins. Some new banknotes such as the Canadian $100 and $50 bill are made of flexible plastic that does not tear and lasts much longer than paper.
lined paper by a lot
Yes
No, paper and plastic are two totally different substances.
Paper, plastic, and metal cans.
melt the plastic back. use a lighter,,,
The Esperanto words for paper and plastic are papero and plasto.
plastic is stronger.
When you get a lighter and some paper then you set the paper on fire.