<p>It would definitely be Mechanical. At UF, Aero and Mech take the same courses for the first 2 years. They also offer a dual degree program that allows a mechanical engineer major to also major in aerospace for only one additional semester. </p>
<p>I can’t really speak for the physics-undergrad and engineering-grad route, but I saw a thread earlier that may give you some insight. </p>
<p><a href=“http://talk.collegeconfidential.com/engineering-majors/360835-engineering-graduate-school-without-undergrad.html[/url]”>http://talk.collegeconfidential.com/engineering-majors/360835-engineering-graduate-school-without-undergrad.html</a></p>