Physics

Physics

Problem

Mars has mass

6.4\times10^{23}\,\text{kg}

and radius

3.4\times10^{6}\,\text{m}

. Determine the speed (in km s

^{-1}

) of a satellite in a circular orbit

400\,\text{km}

above the Martian surface. Use

G=6.67\times10^{-11}\,\text{N m}^{2}\,\text{kg}^{-2}

. a)

4.7

b)

3.4

c)

7.5

d)

3.5

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