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A car traveling with a speed of 60 km/h ...

A car traveling with a speed of 60 km/h can 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 :

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Since, stopping distance `a u^(2), ? (s^(2))/(s_(1)) =((2u)^(2))/(u^(2)) =4" or "s_(2) =4s_(1) = 4xx20 m =80 m`
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