2. 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?2 3. Hybrid Car Batteries3 4. Hybrid Car4 5.
Slingshot5 6. Slingshot6 7. Jet7 8. Jet Fuel8 9. Wind
Maphttp://www.hint.fm/wind/ 9 10. Wind Farm10 11. Mousetrap11 12.
Mousetrap12 13. Vegetables13 14. Football14 15. Energy in Terms of
FootballGizmodo15 16. Explore: Work Using the equation below
calculate the work required to lift an object a certain distance. =
{} MassAccelerationDistanceWork { J }16 17. Joule Newton1 kg 1m17
18. 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. = Acceleration Due to Gravity2
{ } HeightVelocity { m/s }18 19. 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. 1 = ()2 {}
2MassVelocityDistanceKinetic EnergyWork = Potential
EnergyMass1Velocity1Distance1KE1PE2Mass2Velocity2Distance2KE2PE2Mass3Velocity3Distance3KE3PE3
19 20. 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. 20 21. Explore: Pendulum
Conservation of Energy Calculate the potential energy and kinetic
energy at several points along the path of a pendulum. Verify: E =
KE + PEHeight21 22. Explain: Energy ConservationPhysics
Classroom,22 23. Evaluate Using energy concepts, assess football
helmet designs propose improvements. TestGuardian CapJaren Haser/
Sports Editor Lake Country Leader23 24. 24 25. 25 26. 26 27. 27 28.
28 29. 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-areconcussion-494073107
Physics Classroom,
http://www.physicsclassroom.com/Class/energy/U5l1c.cfm Jaren Haser,
Sports Editor Lake Country LeaderCody Taylor, 2013 29
