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\(\pi\)
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\(\frac{a}{b}\)
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The braking distance \(d\) of a car varies directly with the square of its speed \(v\). A car travelling at 50 km/h requires 20 meters to stop.
Find the equation connecting \(d\) and \(v\).
Calculate the braking distance if the car is travelling at 100 km/h.
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