The asteroid 243 Ida has a mass of about 4.0×1016 and an average radius of about 16 (it’s not spherical, but you can assume it is).(adsbygoogle = window.adsbygoogle || []).push({});

A)Calculate the speed with which you would have to throw a rock to put it into orbit around the asteroid 243 Ida, near the surface. v= ?

B)How long would it take for your rock to return and hit you in the back of the head? t=?

Arad= v^2 / R

v=2 pie R / T

A rad= 4 pie^2 R /T^2

Fnet= m (v^2/R)

My brain is fried trying to figure out these problems since i missed lecture because i was sick. trying to submit this hw thats due in like 2 hours any help will be much appreciated!!!!

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

Dismiss Notice

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!

# Circular Motion and Gravitation of asteroid

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