Physics

Problem

A satellite in an elliptical orbit around a planet is

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

from the planet’s center at apogee and moves at

5.0\,\text{km/s}

. If its distance at perigee is

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

, what is its speed at perigee? a)

10\,\text{km/s}

5.0\,\text{km/s}

20\,\text{km/s}

40\,\text{km/s}