Question

drop a paper ,a piece of thermopol and a piece of plastic from a height of 10-15 feet. Note the time for each object to hit the ground Why does the paper take more time then thermopol and thermopol more than plastic piece ? make paper to fell down in such a way that it should hit the ground before all of them .How did it happen ? Explain.
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Answer 1

Answer:

Because there is a buoyant force acting on a paper, thermopol, plastic. As weight increase the buoyant force acts less. In this activity, paper has less weight than thermopol and plastic has less weight than thermopol