Recent content by Lunthar

Good idea! Thank you!

Thanks, so I have now an static and in movement practise for first law. But I still don't know how to prove the second one...

Thanks!:wink: Any idea for second law?

Thanks, and happy new year 2007! But what I was requesting were practical examples, I understand the laws... but I don't know good ways for proving it... specially for an event like that...

Homework Statement I have to prove Newton's laws with a practical project, for my school's science competition. This is what I have until now: 3rd law ==> a) Two balls tied with a thread with a spring between them. b) A rocket/balloon... but I don't know how... any...