A ladder \( 5 \mathrm{~m} \) in length is resting against vertical ...

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A ladder \( 5 \mathrm{~m} \) in length is resting against vertical wall. The bottom of the ladder is pulled along the ground away from the wall at the rate of \( 1.5 \mathrm{~m} / \mathrm{sec} \). The length of the
\( \mathrm{P} \) highest point of the ladder when the foot of the ladder is \( 4.0 \mathrm{~m} \) away from the wall decreases at the rate of
W
(A) \( 2 \mathrm{~m} / \mathrm{sec} \)
(B) \( 3 \mathrm{~m} / \mathrm{sec} \)
(C) \( 2.5 \mathrm{~m} / \mathrm{sec} \)
(D) \( 1.5 \mathrm{~m} / \mathrm{sec} \)
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