Numpty Physics - a physics simulation tool

Numpty physics is a cross platform application licensed under the GPL. It supports problem solving and understanding the nature of forces and is ...well quite addictive. The user has to draw objects on the screen and guide them to break the target using gravity and other forces. Its a bit like drawing a diagram on a blackboard that suddenly acquires all the physical properties of real objects. You can get numpty physics from http://numptyphysics.garage.maemo.org/

Any comments?

[Screenshot added, promoted to front page and added to directory - Admin]