An automobile travelling with a speed of \( 60 \mathrm{~km} / \mathrm{h} \), can brake to stop w...

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An automobile travelling with a speed of \( 60 \mathrm{~km} / \mathrm{h} \), can brake to stop within a distance of \( 20 \mathrm{~m} \). If the car is going twice as fast, i.e. \( 120 \mathrm{~km} / \mathrm{h} \), the stopping distance will be
[AIEEE 2004]
(a) \( 20 \mathrm{~m} \)
(b) \( 40 \mathrm{~m} \)
(c) \( 60 \mathrm{~m} \)
(d) \( 80 \mathrm{~m} \)
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