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Q.

Is it true that a plane sheet of paper falls down faster through the air than a crumpled sheet?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is false.
A plane sheet of paper has larger area than that of a crumpled paper. So, due to larger area, the plane sheet of paper experiences more buoyant force of air. Due to which its speed decreases and it falls slowly. On the other hand, the crumpled paper has small area and hence it experiences less buoyant force and can fall faster than the plane sheet.
So the correct statement would be that a plane sheet of paper falls down slower through air than a crumpled sheet.
 
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Is it true that a plane sheet of paper falls down faster through the air than a crumpled sheet?