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"Projectile Motion Equations And Formulas Calculator." Projectile Motion Equations Formulas Calculator. N.p., n.d. Web. 30 Nov. 2012. <http://www.ajdesigner.com/phpprojectilemotion/vertical_velocity_equation.php>.
"The Science House Is a Learning Outreach Project of NC State University. Our Mission Is to Work in Partnership with K12 Teachers to Increase the Use and Impact of Hands-on Learning Technologies in Mathematics and Science." Projectile Motion. N.p., n.d. Web. 30 Nov. 2012. <http://www.science-house.org/index.php/science-of-sports/96-projectile-motion>.
Lee, Kevin. "How to Calculate Height & Velocity." EHow. Demand Media, 26 Mar. 2011. Web. 30 Nov. 2012. <http://www.ehow.com/how_8115675_calculate-height-velocity.html>.
"How to Calculate the Maximum Height of a Projectile." - For Dummies. N.p., n.d. Web. 30 Nov. 2012. <http://www.dummies.com/how-to/content/how-to-calculate-the-maximum-height-of-a-projectil.html>.