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A car \( A \) is travelling with a speed of \( 72 \mathrm{~km} / \mathrm{h} \) on a
P straight horizontal road. It is followed by another car

W \( B \) which is moving with a velocity of \( 36 \mathrm{~km} / \mathrm{h} \). When the distance between them is \( 25 \mathrm{~m} \), the car \( \mathrm{A} \) is given a deceleration of \( 2 \mathrm{~ms}^{-2} \). After how much time will \( B \) catch up with \( A \) ?
(1) \( (10+10 \sqrt{2}) s \)
(2) \( (5+5 \sqrt{2}) s \)
(3) \( 5 s \)
(4) \( 10 \mathrm{~s} \)
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