Megans-> Bibliograpy

Bibliography;


Websites:

1. Laura. " Work ouput vs. Work input". Mr. Fizzix. n.p, 1988. Web. 05 April 2013.

2. "Mechanical Efficiency." Wikipedia. Wikimedia Foundation, 30 Mar. 2013. Web. 02 April 2013.

3. " What is Friction?." Fear of Physics. n.p, n.d. Web. 04 April 2013.




Videos:

1.http://youtu.be/8OUAoJsuzvU

2. http://sustainabilityworkshop.autodesk.com/products/reducing-friction