i found something to nag about again:)

If you are a student consider this as a subject to investigate...

 

We take a little ball, on it we put a little fire cracker. Light the cracker and throw the ball in the air, so the ball has the three degrees of freedom of movement when the cracker explodes... Ok. Will the ball be moved by the cracker??

 

Step 2. Now do the same, in theory with a mathematical calculation, with the earth. Take the earth and as cracker take a nice big bomb, a nuclear one will do...

 

And, i think, your subject is original enough then... Millions of years the only big force acted upon the earth was a meteorite, or perhaps better could do that.

 

A few variations on the subject, for your friends maybe, are: How many big bombs you need for driving through space. How much bombs to move our orbit beyond mars its one... How much bombs to move the orbit beyond venus its? Make the north the south pole...

 

Those people who start about what about nature and climate and so... Well, you always have people who nag about anything...