Rain is falling vertically downwards with a speed of \( 4 \mathrm{~km} \mathrm{~h}^{-1} \). A gi...

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Rain is falling vertically downwards with a speed of \( 4 \mathrm{~km} \mathrm{~h}^{-1} \). A girl moves on a straight road with a velocity of
\( \mathrm{P} \) \( 3 \mathrm{~km} \mathrm{~h}^{-1} \). The apparent velocity of rain with respect to the

W girl is
(1) \( 3 \mathrm{~km} \mathrm{~h}^{-1} \)
(2) \( 4 \mathrm{~km} \mathrm{~h}^{-1} \)
(3) \( 5 \mathrm{~km} \mathrm{~h}^{-1} \)
(4) \( 7 \mathrm{~km} \mathrm{~h}^{-1} \)
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