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Transcript
Energy Study Guide 1. Work is a transfer of 2. The energy of motion is called 3. A small 50-kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe’s kinetic energy? 4. A 12-kg sled is moving at a speed of 5 m/s. At what speed will the sled have twice as much kinetic energy? 5. An object’s gravitational potential energy is directly related to… 6. Give three examples of objects with elastic potential energy. 7. A 3-kilogram cat is resting on top of a bookshelf that is 2meters high. What is the cat’s gravitational potential energy relative to the floor? 8. The energy stored in gasoline is 9. Walking converts what type of energy into mechanical energy? 10. Solar cells convert what type of energy into electrical energy? 11. Describe the changes in kinetic and potential energy for a pendulum as it swings. 12. Why are fossil fuels so widely used? 13. What is the SI unit for work and energy? 14. What is energy that is stored due to position or shape? 15. What happens to the kinetic energy of a moving object when its mass is tripled? 16. If a car and a bicycle both have the same kinetic energy, which one is moving faster? (assume both objects are in motion) 17. What are two types of nuclear reactions? 18. Give three examples of renewable energy sources. 19. Give three examples of nonrenewable energy sources. 20. What is the kinetic energy of a90-kg sky diver falling at a terminal velocity of 81 m/s? 21. A small monkey is trained to jump straight up a distance of 1.1 m. How much kinetic energy does the 6-kg monkey need to jump this high? 22. In a nuclear reaction, an amount of matter having a mass of 1.0 10-5 kg is converted into energy, which is released. How much energy is released? 23. Describe the change in kinetic and potential energy of a bouncing ball.
