The impact (outer force) consists of three variables:

When impact (input) is applied to a vehicle, the force is divided into two or more directions. The divided forces become a dispersed impact onto the body. Here is an example:
When the specified force ‘‘F1-O’’ (magnitude) is applied at input point ‘‘O’’ (input point) with angle “?” (direction), F1-O for an actual vehicle is divided into the horizontal forces, F2 and F3 and the vertical force F4.