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The friction of the air causes vertical retardation equal to one tenth of the acceleration due to gravity

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The friction of the air causes vertical retardation equal to one tenth of the acceleration due to gravity (Take g = 10 ms–2). The time of flight will be decreased by 

(a) 0% 

(b) 1% 

(c) 9% 

(d) 11%

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1 Answer

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Best answer

Correct Option (c) 9%

Explanation:

Fractional decrease in time of flight 

Percentage decrease = 9%

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