When i have physics i cannot move object forward and backward

Troubleshooting physics
1

Please, help me. :disappointed_relieved:

I am making my game and i really need physics. :pensive:

2

Then ask a question. You’ve provided basically no information at all.

3

Hey! My crystal ball tells me that OP has attached a Physics control to a Spatial, and then tries to just move the Spatial around intead of applying forces to the Physics control.

I suggest to read this:
http://wiki.jmonkeyengine.org/doku.php/jme3:advanced:physics