hey i have 2 very simple questions i cant seem to do.(adsbygoogle = window.adsbygoogle || []).push({});

1) determine the speed of the earth around the sun...

2)The asteroid Pallas has an orbital period of 4.62 years. find the semi-major axis of its orbit.

i no these r simple but i jsut cant seem to get them can someone help me or let me know of some formulas that will help? thank you in advance

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Universal gravity

**Physics Forums | Science Articles, Homework Help, Discussion**