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Review: Mr. Hauser's Rules of the Game - Chapter 5

Test your knowledge of work, energy, and power with these questions from Chapter 5. Answer quickly and earn points for your team!

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Review: Mr. Hauser's Rules of the Game - Chapter 5

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  1. Chapter 5 Review Mr. Hauser

  2. Rules of the Game • Working in TEAMS, you will be asked to answer questions from the assigned chapters. • You have 30 seconds to write the answer down on the dry erase board. • When the teacher says TIME’S UP, a team leader will stand up and show the teacher their answer.

  3. Rules (Continued) • Each correct answer is worth one point, unless otherwise stated. • Teams can lose points for inappropriate conduct, comments, or cheating. • The team with the most points at the end of the game wins!

  4. Question 1 A force applied over a distance is called ____________.

  5. ANSWER Work

  6. Question2 What are the metric units used to measure Work? (Write out the word.)

  7. ANSWER Joules

  8. Energy of motion is called Potential Work Kinetic Chemical Question 3

  9. ANSWER Kinetic

  10. Question 4 What are the metric units used to measure power? (Write out the word)

  11. ANSWER Watts

  12. Question 5 A force of 45 Newtons acts on an object at an angle of 50 degrees above the horizontal pulling it 3 meters. How much work was done? (you must have the proper units with your answer)

  13. ANSWER 86.8 Joules

  14. Question 6 The rate at which work is done is called ______.

  15. ANSWER Power

  16. Question 7 Power is ________ related to time. A) directly B) inversely C) quadratically D) linearly

  17. ANSWER B) inversely

  18. Question 8 When the force acting on an object is opposite the direction of motion of the object, _________ work is done.

  19. ANSWER negative

  20. Question 9 _________ is defined as the ability to cause change or the ability to do work.

  21. ANSWER Energy

  22. Question 10 If an object doubles its mass, its potential energy will ________. • be halved • double • quadruple • be reduced to one fourth

  23. ANSWER B) double

  24. Question 11 If an object doubles its speed its kinetic energy will... • be halved. • double. • quadruple. • be reduced to one fourth.

  25. ANSWER C) quadruple

  26. Question 12 List five types of non-mechanical energy we discussed in class.

  27. ANSWER Nuclear (atomic), Thermal, Chemical, Electrical, Light (radiant)

  28. Question13 This is considered “stored” energy or energy of position.

  29. ANSWER Potential energy

  30. Question 14 A bird is flying above the ground. What type or types of mechanical energy does it have? (be as specific as possible)

  31. ANSWER Gravitational potential energy and kinetic energy

  32. Question 15 How much horsepower do you have if your mass is 75 kg, and you can climb the steps that are 3.29 meters high in a time of 2.3 seconds?

  33. ANSWER 1.4 horsepower

  34. Question 16 How much work is done to lift a 45 kg weight up a distance of 6.2 meters at a constant velocity?

  35. ANSWER 2,734 Joules

  36. Question 17 How much work must be done by a force to accelerate a 1800kg car from 4.5 m/s to 27 m/s? (show units)

  37. ANSWER 638,000 Joules

  38. Question 18 In the lab, we found the work done on the bow by pulling it back by finding the ________ under the graph of force vs. displacement.

  39. ANSWER area

  40. Question 19 A rollercoaster starts from rest on top of its hill. It drops and moves through the bottom of the hill. What types of mechanical energy did the roller coaster have at the top and at the bottom? (Be as specific as possible)

  41. ANSWER Gravitational Potential Energy at the top and Kinetic Energy at the bottom

  42. Question 20 Energy can neither be created nor destroyed but it can be converted from one form to another. This statement is called ______.

  43. ANSWER Law of Conservation of Energy

  44. Question 21 Write the long form of the equation for the Law of Conservation of Energy.

  45. ANSWER KEf + PEf = KEi + Pei + (Wfriction)

  46. Question 22 All of the energy lost in a machine due to friction ends up in the form of ________.

  47. ANSWER Heat

  48. Question 23 The energy that you use to move around all day long indirectly comes from what?

  49. ANSWER The sun

  50. Question 24 When a spring is stretched four times further than its relaxed position, by what factor does its elastic potential energy increase?

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