(1) Where, but for this section, the operation of a provision of this Act or of a declaration made under Part II would result in the acquisition of property from a person otherwise than on just terms, there is payable to the person by the Commonwealth such reasonable amount of compensation as is agreed upon between the person and the Commonwealth or, failing agreement, as is determined by the Federal Court.
(2) In subsection ( 1), acquisition of property and just terms have the same respective meanings as in paragraph 51(xxxi) of the Constitution.