If something pushes or pulls on an object, we say that a force is acting on the object.
(something; pushes; ) (something; pulls; on an object) (we; say; that a force is acting on the object) Context(we say,List([43, 49))):(a force; is acting; on the object)
we say,List([43, 49))
something something we a force
pushes pulls say is acting
on an object
that a force is acting on the object
on the object