1. The problem statement, all variables and given/known data At perihelion a planet in another solary system is 175 x 10 ^ 6km from its Sun and is traveling at 40km/s. At aphelion it 250 x 10 ^ 6 km distant and is traveling at? 2. Relevant equations IiWi = IfWf 3. The attempt at a solution What do i do?