The driver of a car which is moving on a straight P horizontal road...

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The driver of a car which is moving on a straight
P horizontal road with a speed of \( 72 \mathrm{kmh}^{-1} \) applies

W brakes. If the retardation produced is \( 20 \mathrm{~ms}^{-2} \), the distance moved by the car before coming to rest will be
(1) \( 10 \mathrm{~m} \)
(2) \( 8 \mathrm{~m} \)
(3) \( 6 \mathrm{~m} \)
(4) \( 2 \mathrm{~m} \)
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