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Physical Science Study Guide Chapter 11 ‘Work and Energy’ Test (Thursday, 5/3/12) 1. Define what Kinetic Energy is, what is the formula and what does each variable mean? 2. Define what Potential Energy is, what is the formula and what does each variable mean? 3. What is Mechanical Energy? Give some examples. 4. What is non-Mechanical Energy? Give some examples 5. A ball is falling from a given height. Explain the types energy involved and how energy is being transformed. 6. What is the formula for Work and describe each variable plus their units. 7. What is the formula for Power and describe each variable and their units. 8. Give a complete definition of the Law of Conservation of Energy and provide an example using a non-frictionless Roller Coaster. 9. Calculations: Prob # Height (m) 1 2m Velocity (m/s) 5 m/s 2 4m 6 m/s 3 3 m/s 4 Mass (kg) KE (J) 10 m 6 5m Total Energy 1200 J 2000 J 100 kg 1500 J 50 kg 800 J 25 kg 5 PE (J) 750 J 75 kg 1500 J 1000 J Show Work for Each Problem in Above Table: ( PE = mgh and KE = 1/2mv2 ) 1. 2. 3. 4. 5. 6.