Archive for the ‘Dynamics’ category

Fly me to the Moon!

June 24, 2012

Welcome to Year 10 Astronomy, Students, Parents and Colleagues!

This semester we will be doing many things – we have almost twenty weeks, so there is a lot of time to get into the fun stuff! We will be starting with:


Rockets are amazing – they are Humanity’s ticket off earth, and eventually may be a crucial part of the future history and development of Homo Sapiens. We are starting our study of rockets with some very simple investigations into balloon rockets. Balloon rockets (actually all rockets!) work by pushing gases out the back of the rocket – which due to Newton’s Third Law means that the rocket is pushed forwards!

Think about it – if you put your hands on a wall, and push hard on the wall, you move away from the wall. It’s not because the wall is attached to the ground (although that helps, because you can push harder!), it’s because the wall pushes on you just as hard as you push on it!