O cd body is projusted with some goed from ground vertically reprore. Eind the distance travelled by the body in last seconds of its pard journey.

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Distange by ( underline{n} ) th second [ begin{array}{l} S_{n}=u+frac{a}{2}(2 n-1) quadleft[tan n=frac{u}{g} omega_{n}right] S_{n}=u+frac{-g}{2}left(frac{2 u}{g}-1right) quad a=-g =u+left[-u+frac{g}{2}right) S_{n}=g / 2 end{array} ] last second distance covend is ( 8 / 2^{m} )

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