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Kinetic and Potential Energy. Energy. What is energy? Where does energy come from? In what forms does energy exist? What would the universe be like if there were no energy?. Hybrid Car Batteries. Hybrid Car. Slingshot. Slingshot. Jet. Jet Fuel. Wind Map. http://www.hint.fm/wind/.

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## Kinetic and Potential Energy

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**Energy**• What is energy? • Where does energy come from? • In what forms does energy exist? • What would the universe be like if there were no energy?**Wind Map**http://www.hint.fm/wind/**Energy in Terms of Football**Gizmodo**Explore: Work**• Using the equation below calculate the work required to lift an object a certain distance.**Joule**Newton 1m**Explore: Velocity Due to Gravity**• Using the equation below, calculate the velocity of an object when it hits the ground when dropped from any height you choose.**Explore: Kinetic Energy**• Using the same masses from the “work” table, calculate the kinetic energy of those masses when they hit the ground –dropped from the same distances used in the “work” table.**Explore: Conclusion**• Notice: The work required to lift a mass is equivalent to the kinetic energy of that mass when it hits the ground. That is, the initial gravitational potential energy associated with an object is equivalent to the kinetic energy of the object when it hits the ground.**Explore: Pendulum –Conservation of Energy**• Calculate the potential energy and kinetic energy at several points along the path of a pendulum. Verify: E = KE + PE Height**Explain: Energy Conservation**Physics Classroom,**Evaluate**• Using energy concepts, assess football helmet designs –propose improvements. • Test Guardian Cap Jaren Haser/ Sports Editor Lake Country Leader**References**• All images are in the Public Domain, unless stated otherwise. • ‘Boy with Slingshot’ image used with permission of Stephanie Sicore. • Gizmodo, http://gizmodo.com/holy-hell-this-is-how-football-helmets-are-concussion-494073107 • Physics Classroom, http://www.physicsclassroom.com/Class/energy/U5l1c.cfm • Jaren Haser, Sports Editor Lake Country Leader Cody Taylor, 2013

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