The xpDrag modifier accurately simulates the physical effects of passing through mediums such as water, air, mercury and other substances.

It calculates a drag force using its Density and Drag Coefficient settings, slowing particles down.

Note: The other components that act, in conjunction with these nxDrag settings (of density and drag coefficient), to accomplish the overall drag force calculation are particle speed, size and mass.

Objects that are traveling faster will be more affected by drag than slower ones.

The Speed setting for the particles can be found in the Emission tab of xpEmitter.

Drag force means that objects with a larger surface area will slow down more quickly than smaller ones, which makes the particle Radius setting (in the Emission tab of the xpEmitter) important.

Finally, lighter items are more affected by drag than heavier ones.

To manipulate this, use the Mass setting for particles in the Extended Data tab of the xpEmitter.

Object Properties

The Object tab menu in xpDrag.