Introducing the Physics behavior! Powered by Box2DWeb, this allows you to simulate objects realistically in Construct 2-made HTML5 games. Here's a simple demo. It also supports hinge joints, which allows for other cool stuff like ragdolls. Please note the Physics behavior should be considered beta - there may be problems with it. Don't forget to report any bugs!
Physics integrates really nicely with the new collision system - you have the option of using your collision polygon from the image editor as the physics collision mask, or you can override it as a circle (for rolling objects) or simple bounding box. Also, the hinge features use image points to allow you to attach things wherever you like on your object.
Check the Examples directory (linked to in the welcome screen) for five new Physics examples: basics, distance joint, ragdoll, revolute joint and vehicle. Play around and see what you can do with Physics! Have fun!