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Take a sheet of paper and piece of stone...

Take a sheet of paper and piece of stone. Drop the two together from the second floor of a building. Check if both of them reach the ground simultaneously. Explain why if the answer is 'yes' and why not if the answer is 'no'.

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The sheet of paper and piece of stone do not reach the ground simultaneously. Infact, stone reaches the ground before the sheet of paper. This is because resistance of air opposes the motion of sheet of paper more than it opposes the motion of stone.
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