One is never certain who, if anyone, will read an article that one publishes. I am happy to see that Rod Cross not only has read our paper but also was interested enough to perform experiments to test its conclusions. He reports that his experiments have failed to reproduce those conclusions. Of course! The paper's opening paragraph sets the stage by describing explicitly and precisely the assumptions built into the analysis: point-mass projectile, no air resistance, no energy loss, and no surface friction. From what Dr. Cross has described, his equipment certainly does not meet those criteria. Any resemblance of his experimental observations to what is described in that article is entirely coincidental.