References
Bagul, A. (2002, September 5). Elasticity, Plasticity, Elastic/Plastic Body, Stress and strain,Deforming force,Restoaring force. [Video file]. Retrieved from http://www.youtube.com/watch?v=YA_I2OvfM2I
Benson, T. (Ed.). (2010, September 10). What is lift? [Fact sheet]. Retrieved February 7, 2014, from NASA website: http://www.grc.nasa.gov/WWW/k-12/airplane/lift1.html
Bill Nye Flight 2 [Video file]. (2009, August 30). Retrieved from http://www.youtube.com/watch?v=Utt3ktk4HpE
Elasticity. (2013, January 24). In Encyclopedia brittanica. Retrieved February 7, 2014, from http://www.britannica.com/EBchecked/topic/182035/elasticity
Friction. (2013, May 23). In Encyclopedia britannica. Retrieved February 7, 2014, from http://www.britannica.com/EBchecked/topic/220047/friction
[Gravity attracts objects towards the centre of the earth]. (2014). Retrieved from http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel_pre_2011/space/gravityforceandweightrev3.shtml
[An illustration of the (incorrect) equal transit-time explanation of airfoil lift]. (2014, January 29). Retrieved from http://en.wikipedia.org/wiki/Lift_(force)
Nordtvedt, K. L., Jr. (2013, March 19). Gravity. In Encyclopedia britannica. Retrieved February 7, 2014, from http://www.britannica.com/EBchecked/topic/242523/gravity
[A person pulling a large block.]. (n.d.). Retrieved from http://www.clinicalgaitanalysis.com/teach-in/friction.html
[Scientist with test tube]. (n.d.). Retrieved from http://extension.usu.edu/waterquality/htm/science-fair-project-ideas/
Sharara, A. (2013, May 18). 36 BillNye-Friction [Video file]. Retrieved from http://www.youtube.com/watch?v=nmnzLW6YoF0
Sharara, A. (2013, May 19). 40 BillNye-Gravity [Video file]. Retrieved from http://www.youtube.com/watch?v=5S9l_eqjn_U
Wolfson, R., & Pasachoff, J. M. (1995). Physics with modern physics for scientists and engineers (2nd ed.) (D. Humphrey, K. Richmond, & C. Zombo, Eds.). New York, USA: HarperCollins College.
Benson, T. (Ed.). (2010, September 10). What is lift? [Fact sheet]. Retrieved February 7, 2014, from NASA website: http://www.grc.nasa.gov/WWW/k-12/airplane/lift1.html
Bill Nye Flight 2 [Video file]. (2009, August 30). Retrieved from http://www.youtube.com/watch?v=Utt3ktk4HpE
Elasticity. (2013, January 24). In Encyclopedia brittanica. Retrieved February 7, 2014, from http://www.britannica.com/EBchecked/topic/182035/elasticity
Friction. (2013, May 23). In Encyclopedia britannica. Retrieved February 7, 2014, from http://www.britannica.com/EBchecked/topic/220047/friction
[Gravity attracts objects towards the centre of the earth]. (2014). Retrieved from http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel_pre_2011/space/gravityforceandweightrev3.shtml
[An illustration of the (incorrect) equal transit-time explanation of airfoil lift]. (2014, January 29). Retrieved from http://en.wikipedia.org/wiki/Lift_(force)
Nordtvedt, K. L., Jr. (2013, March 19). Gravity. In Encyclopedia britannica. Retrieved February 7, 2014, from http://www.britannica.com/EBchecked/topic/242523/gravity
[A person pulling a large block.]. (n.d.). Retrieved from http://www.clinicalgaitanalysis.com/teach-in/friction.html
[Scientist with test tube]. (n.d.). Retrieved from http://extension.usu.edu/waterquality/htm/science-fair-project-ideas/
Sharara, A. (2013, May 18). 36 BillNye-Friction [Video file]. Retrieved from http://www.youtube.com/watch?v=nmnzLW6YoF0
Sharara, A. (2013, May 19). 40 BillNye-Gravity [Video file]. Retrieved from http://www.youtube.com/watch?v=5S9l_eqjn_U
Wolfson, R., & Pasachoff, J. M. (1995). Physics with modern physics for scientists and engineers (2nd ed.) (D. Humphrey, K. Richmond, & C. Zombo, Eds.). New York, USA: HarperCollins College.