forces

hey all,
i want to add a force to an object. the main problem is that the force never ends. how do i make it temporary?

Just remove it again:

addLinearForce( force )
removeLinearForce( force )
clearLinearForces( )

Please pay some attention to the API reference. Here in this case for class Physical. This is the most important part of the documentation once you are beyond newbie tutorials.
http://www.panda3d.org/apiref.php?page=classes

enn0x