Citations


-"About Longboarding." About Longboarding. Soulboards Co., n.d. Web. 17 Nov. 2013.

-Elert, Glenn. "Coefficients of Friction for Concrete." Coefficients of Friction for Concrete. N.p., n.d. Web. 17 Nov. 2013.

-Jono. "Longboard Pumping Guide." Longboard Pumping Guide. N.p., n.d. Web. 17 Nov. 2013.

-Knight, Randall D. Physics for Scientists and Engineers: A Strategic Approach; with Modern Physics. Boston: Pearson, 2013. Print.

-"Longboard Decks Explained." Windward Boardshop. N.p., n.d. Web. 17 Nov. 2013.

-Ohnson, Alan A. J, and Randall J. Storey. "Frictional Behaviour of a Polyurethane Rubber Sliding on Concrete: Analysis of a Slip and Fall Accident." Technology, Law and Insurance 5.3-4 (2000): 111-16. Taylor and Francis. 05 Nov. 2010. Web. 17 Nov. 2013.
Picture Citations
            http://media.mlive.com/grand-haven/photo/9539753-large.jpg
¨http://i1.ytimg.com/vi/X-GLulOc868/maxresdefault.jpg
¨http://dribbble.s3.amazonaws.com/users/309470/screenshots/1044270/longboarder.jpg
¨http://farm7.staticflickr.com/6089/6091547607_430b88df07_z.jpg
¨http://scene7.zumiez.com/is/image/zumiez/product_catalog/OJ-III-Hot-Juice-60mm-Bright-Orange-Longboard-Wheels-_189831.jpg
¨http://i.ebayimg.com/t/Gel-Blue-Longboard-Skateboard-WHEELS-62mm-Set-of-4-/00/s/NzQ4WDc0OA==/$T2eC16ZHJF8E9nnC8GkcBQ7Hkd5ljg~~60_35.JPG
¨http://daniellbohnhof.com/wp-content/uploads/2013/05/longboard_sunset_daniell_bohnhof.jpg
¨http://www.nachi.org/images10/treehouse.jpg
¨http://longestride.files.wordpress.com/2012/04/tumblr_lzrvg1d0e51r9bqwxo1_12801.jpg?w=800