Physics

Problem

A small comet approaches the Sun such that its distance of closest approach (perihelion) is

0.50\,\text{AU}

and its farthest distance (aphelion) is

1.50\,\text{AU}

. If its speed at perihelion is

50\,\text{km\,s}^{-1}

, determine its speed at aphelion. a)

25\,\text{km\,s}^{-1}

150\,\text{km\,s}^{-1}

16.7\,\text{km\,s}^{-1}

33.3\,\text{km\,s}^{-1}