Physics and Phenomena

Some interpret Kant's Metaphysical Foundations of Natural Science as an attempt to certify Newtonian Physics, i. e. by demonstrating that the latter is grounded in the a priori structures of Experience--Space, Time, and the Categories of the Understanding.  However, such an interpretation confuses Kant's ambition with Husserl's, which is to defend Science from the "crisis" of a reduction to Empiricism, and, hence, to contingency.  However, as is plain from the Critique of Pure Reason, the primary purpose of the Foundations is to demonstrate that Newtonian Physics is a system merely of Phenomena, in order both to expose some of its groundless pretensions, as well as to immunize Morality, i. e. the realm of Freedom, from it.