An automobile travelling with a speed of $60\,\,km/h,$ can brake to stop within a distance of $20 \,m$. If the car is going twice as fast, i.e. $120\, km/h$, the stopping distance will be ........... $m$
- [AIEEE 2004]
- A$20 $
- B$40$
- C$60 $
- D$80$
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