Im having fun thinking about rockets.

The earth is 12000 miles in diameter. So, when the rocket is sat on earth, it goes around with the earth(rotation speed) 12000mph * PI.

Now I want to know what is the rotation speed of the rocket once it's 12000 miles above the earth.

Is it still 12000mph * PI?

Or is it 36000mph * PI?

Im fireing the rocket streight up. What feels strange is the rocket on earth is at the rotation speed of the planet, when i fly off why would the rotation speed of the rocket increase to stay directly above its start point as I get further out?

In fact the rotation speed of the rocket must decrease on return. Something to think about too.

Does anyone understand what im on about here? Not only is it accelating outwards it's accelerating around too. It's got to go around faster to keep up and stay above the start point.

Don't know how I came out with this one.