What I mean by with physical interaction is this:
Here is the description for the spell from the Mage: The Awakening book
"The mage can co-locate people or objects with one another and cause them to physically interact. When two or more objects (including people) are superimposed upon one another and allowed to interact, they are usually destroyed in a very messy fashion, as molecular lattices collide and drive each other apart. For living creatures, the result is crippling at the very least.
I hope this helps.