A stone is dropped from the top of a tower of height \( h \). After \( 1 \mathrm{~s} \) another ...

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A stone is dropped from the top of a tower of height \( h \). After \( 1 \mathrm{~s} \) another stone is dropped from the balcony \( 20 \mathrm{~m} \)
\( \mathrm{P} \) below the top. Both reach the bottom simultaneously. What is the value of \( h \) ? Take \( g=10 \mathrm{~m} \mathrm{~s}^{-2} \).
(1) \( 3125 \mathrm{~m} \)
(2) \( 312.5 \mathrm{~m} \)
(3) \( 31.25 \mathrm{~m} \)
(4) \( 25.31 \mathrm{~m} \)
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