+4 Figure out how fast our solar system is going around the galaxy and then compare that with how fast earth is going around the sun.
I can't use a calculator or Google. The only info I have is that the galaxy is 100,000 lightyears across, it takes 200 million years for our solar system to travel the entire way, and our system is three-fourths of the way away from the centre. I have to assume that the galaxy is a perfect circle and our solar system goes in a perfect circle.
+37147 diameter of the circle is then 3/4 ( 100 000 light years) = 75 000 l-y
circumference is then pi* 75 000 l-y
speed = d/ t = 75 000 pi l-y / 2x106 years now you have to convert it to the units you want ....
