Answer:
Orbital speed is given by the formula:
[tex] v=\sqrt{\frac{GM}{r}} [/tex]
Mass of Ceres, M = [tex] 1.98\times 10^{30} kg[/tex]
The closest distance of Ceres to sun is : 382,620,000,000 m
orbital speed of Ceres at perihelion is:
[tex] v=\sqrt{\frac{1.67\times 10^{-11}\times 1.98\times 10^{30}}{382,620,000,000}} = 9296.23 m/s =20795.07 miles/hour[/tex]
The farthest distance of Ceres to sun is : 382,620,000,000 m
orbital speed of Ceres at aphelion is: 414,010,000,000 m
[tex] v=\sqrt{\frac{1.67\times 10^{-11}\times 1.98\times 10^{30}}{414,010,000,000}} = 8936.87 m/s = 19991.2 miles/hour[/tex]
