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A freely falling body covers_____ of total distance in 3rd second.

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35.5%

55.55%

45.5%

answer is C.

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Detailed Solution

$\begin{array}{l} S = \frac{1}{2} {gt}^{2} = \frac{1}{2} g (3)^{2} \\ S_{3} = S - S_{2} = \frac{1}{2} g (3)^{2} - \frac{1}{2} g (2)^{2} \\ S_{3} = \frac{5 g}{2} \end{array}$

$\frac{S_{3}}{S} \times 100 = \frac{5}{9} \times 100 = 55.5 %$

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