Safe speed on a curved road: banking and friction

1. A.
   28.8 m
2. B.
   14.4 m
3. C.
   8.8 m
4. D.
   4.8 m

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1. A.
   $\frac{V^{2}\text{ }b}{Rg}$
2. B.
   $\frac{V}{Rgb}$
3. C.
   $\frac{V^{2}R}{g}$
4. D.
   $\frac{V^{2}b}{g}$

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1. A.
   $25 : 9$
2. B.
   $24 : 5$
3. C.
   $24 : 9$
4. D.
   $25 : 4$

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