This set of parameters is only visible when the MultiBody's → “Simulation” option is set to “Soft body”.
...
Here, the initial angular velocity of a soft body is defined. You can use any positive (clockwise rotation) or negative (counterclockwise rotation) value for the parameter's X, Y, and Z components. “Velocity” is measured in degrees per second. Higher values make the object spin faster. Click on “+” for sliders.
Threshold
This value depends on a body’s change of its initial length to produce a permanent deformation. The range goes from 0.0 to 1.0. A value of 0.5 means that permanent deformation will only happen when the body’s length change is at least 50% of its initial size.
Acquired
The parameter's range goes from 0.0 to 1.0. A setting of 0.5 will keep approximately 50% of the node’s deformation as permanent. The other half is able to relax and turn back to its initial state.
...