<p>No personal experience with either (son took a different class), but found this thread that may answer your question:
<a href=“http://talk.collegeconfidential.com/university-michigan-ann-arbor/1309680-physics-135-or-140.html”>http://talk.collegeconfidential.com/university-michigan-ann-arbor/1309680-physics-135-or-140.html</a></p>