For problem #38, I got 19.5 revolutions not 195.  Please explain how to go from -0.27 rad/s^2 for angular acceleration to revs.

Deborah, your answer is correct. The problem set is fixed. Thanks very much for your work.  John

For problem #67 I got 2.6 m/s

Matthias, you are correct, I posted the correction. Thanks for the help!  John

TY, I remember doing that and I just could not remember.  Thanks so much :)