The following are some web sites that might be useful as we cover work-energy.
http://theory.uwinnipeg.ca/physics/work/
http://www.ccc.edu/wright/science/physics221/P221Ws6.htm
http://www.ccc.edu/wright/science/physics221/P221Ws6.htm
http://www.suremath.com/suremath/suremath/kinDir/kinMenu.html#nativeIncline
http://zebu.uoregon.edu/~probs/mech/work.html
http://www.sams.ac.uk/mei_lectures/pop/studio5.pdf
http://www.slcc.edu/schools/hum_sci/physics/tutor/2210/kinetic_energy/