It sounds like you're asking for a (script, setup, or explanation) of Maya + Pulldownit — a popular dynamic fracturing and destruction plugin.
// 3. Make them dynamic rigid bodies for ($p in $pieces) pdiMakeDynamic $p; maya pulldownit
// 4. Add a passive ground plane (select a polygon plane) // Select the ground plane, then: pdiMakePassive; It sounds like you're asking for a (script,