The minimum speed at which a car can leave the road at the top is 10.84 m/s.
The minimum speed at which the car can leave the road is calculated as follows;
[tex]F_c = F_n\\\\\frac{mv^2}{r} = mg\\\\\frac{v^2}{r} = g\\\\v^2 = rg\\\\v = \sqrt{rg} \\\\[/tex]
where;
[tex]v = \sqrt{12 \times 9.8} \\\\v = 10.84 \ m/s[/tex]
Thus, the minimum speed at which a car can leave the road at the top is 10.84 m/s.
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