Escape velocity on a planet from its mass and radius, or density and radius

1. A.
   $12{kms}^{- 1}$
2. B.
   $24{kms}^{- 1}$
3. C.
   $36{kms}^{- 1}$
4. D.
   $6{kms}^{- 1}$

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1. A.
   1
2. B.
   3
3. C.
   18
4. D.
   2

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1. A.
   $4:1$
2. B.
   $2:1$
3. C.
   $1:\sqrt{2}$
4. D.
   $1:4$

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1. A.
   67.2
2. B.
   16.8
3. C.
   33.6
4. D.
   11.2

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1. A.
   $11.2\text{ }km/s$
2. B.
   $8.4\text{ }km/s$
3. C.
   $4.2\text{ }km/s$
4. D.
   $7.9\text{ }km/s$

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1. A.
   $\frac{V}{3}$
2. B.
   $\frac{V}{4}$
3. C.
   $\frac{V}{12}$
4. D.
   $\frac{v}{6}$

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1. A.
   11.2
2. B.
   5.6
3. C.
   2.8
4. D.
   8.4

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1. A.
   1000
2. B.
   $200\sqrt{5}$
3. C.
   $100\sqrt{10}$
4. D.
   $1000\sqrt{2}$

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