I had some time this evening so I revisited an old thread I’d been meaning to review for some time,
This is the thread below. Please do not re-open it. Post all answers here.
Did we ever some to some final and absolute conclusion in this thread as to the OP’s question? Was he correct or was his friend correct re the physics of the collision? I’m assuming per the final comments that the OP was correct and his “knucklehead” friend was wrong.