The Basics of Physics with Unity
Unity makes it very simple and easy to use basic physics in your projects. This is done through the use of colliders and rigid bodies. The rigid body is the property that applies physics to the object and the colliders are used as a way to interact with the rigid bodies. The best way to understand how this works is to give a demonstration.
This is what happens when both objects only have colliders. They will not be able to interact with each other because there is no rigid body.
This is the result of only one object having a rigid body. The rigid body gives the top cube physics. The red cubes collider detects the rigid body and the grey cube sits on top.
If both objects have rigid bodies they will interact like this. They will be able to interact with each other and push each other.
