The aphelion distance of a planet from the Sun is and its speed at that point is

PHYSICS · Subjective · CBSE · Physics · Gravitation · Gravitation

Problem

The aphelion distance of a planet from the Sun is

1.50\,\text{AU}

and its speed at that point is

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

. If its perihelion distance is

0.50\,\text{AU}

, calculate its speed at perihelion.