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The friction of the air causes a vertica...

The friction of the air causes a vertical retardation equal to 10% of the acceleration due to gravity `(take g=10ms^(-2))` The maximum height will be decreased by:

Text Solution

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`T = (2 u sin theta)/(g) therefore (T_1)/(T_2) = (g_2)/(g_1) = (g + (g)/(10))/(g) = (11)/(10)`
Fractional decrease in time of flight `= (T_1 - T_2)/(T_1) = (1)/(11)`
Percantage decrease `= 9 %`.
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