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Energy and Work in Physics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. One watt of power is used when _____ of work is done in _____.

Question 2 2. What is the kinetic energy of a 2,500 kg truck going 22 m/s?

Question 3 3. The equation 1/2 mass * velocity^2 is used to calculate _____.

Question 4 4. The work done on an object by an applied force is equal to _____.

Question 5 5. The formula 1/2(kx^2) calculates _____.

Page 2

Question 6 6. What is the potential energy of a 750 g ball at the top of a building that is 20 m tall?

Question 7 7. The ability to perform work is referred to as _____.

Question 8 8. What does the equation force * distance calculate?

Question 9 9. Alexander, who weighs 180 pounds, lifts a 10 N box 15 m in the air. How much work did he do?

Question 10 10. A device that alters the magnitude and/or direction of a force is called a(n) _____.

Page 3

Question 11 11. What does the equation MA = s/h calculate?

Question 12 12. According to _____, energy cannot be created or destroyed, although it may appear to be lost as heat.

Question 13 13. Zelda is standing at the top of a ski slope and is preparing to start moving down. This is an example of _____.

Question 14 14. The amount of kinetic energy of an object is dependent upon the speed or velocity of the object AND the _____.

Question 15 15. In which of the following scenarios is kinetic energy NOT conserved?

Page 4

Question 16 16. What is a joule?

Question 17 17. Why is Hooke's law important for finding elastic potential energy?

Question 18 18. An inclined plane can be viewed in 2D as a right angle trangle. The three sides of the inclined plane triangle are a length that travels horizontal to the ground, a height perpendicular to the ground, and a slope at some angle to the ground. Using two of these three sides, what is the equation for the mechanical advantage of an inclined plane?

Question 19 19. Which of the following is NOT true about the work-energy theorem?

Question 20 20. Which of the following types of energy does the sun use to heat up our atmosphere?

Page 5

Question 21 21. Which best describes potential energy?

Question 22 22. Different types of energy can be categorized as either kinetic or potential.

Question 23 23. How do we know that gravitational potential energy exists?

Question 24 24. What is the mass of an object with kinetic energy of 1000 Joules and velocity of 5 meters per second?

Question 25 25. What is the standard unit of power?

Page 6

Question 26 26. Which of the following are types of kinetic energy?

Question 27 27. Which best describes 'work?'

Question 28 28. To find the formula for elastic potential energy of a spring we need to know the spring constant and the displacement of the spring. What exactly do we mean by displacement of the spring?

Question 29 29. What do we look at to tell us how effective a simple machine is?

Question 30 30. Why does it take more work to stop a fast car than a slow one?

Energy and Work in Physics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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