I'm writing my own basic physic engine and now I come to a problem I can't solve. Probably because I don't how to google this problem.
So here is my problem. I hope this image can explain it:
I have two objects. The gray one is fixed and don't move and the green one which falls from the top. The green object has three vectors: a force, the acceleration and the velocity. It collides with the fixed gray object.
The real question is how can I get the rotation of the green object when it falls down?