semester 2 final exam study guide

! "" " # $ % & ' ( $ ) *+ *) ' , " ! & , "$ - ) ./$ "*) $ ) *+ *) ' , 000 1 " 23 " 4# 5 67o o 1 ( o 3 , 4 o & o 8 # #9 7• • 8 :3 • 9 • ( #. • 3 8 • /Final Exam ScheduleFind your class period and time. DO NOT be late. You will not be compensated for time you arelate and your name will be turned into the office. There is NO excuse to miss the final exam.Thursday, May 27 Friday, May 288:10-9:40 Period 3 8:10-9:40 Period 19:50-11:20 Period 4 9:50-11:20 Period 211:20-12:15 Lunch 11:20-12:15 Lunch12:20-1:50 Period 5 12:20-1:50 Period 62:00-3:30 Period 7 2:00-3:30 Period 8 Make upsPage 1 of 19

Measurement and the Metric SystemDirections: Convert the following metric units. To receive full credit, ALL work must beshown.1. 78,000 cg to g Answer:2. 354.6 mm to m Answer:3. 0.0237 km to mm Answer:Directions: For each problem below, write the correct property being measured in theblank next to the measurement given. Answers may be used more than once, onlyonce, or not at all.timemasstemperaturelength1) 100 sec 2) 56 km3) 7,624 mg 4) 0.065 hr5) 32.5°C 6) 45.3 cmDirections: For each question, compare the two measurements. Circle the largermeasurement for each pair..4. 3.6 m or 36 cm 6. 1 km or 100 m5. 580 mm or 5.8 mPage 2 of 19

kilo-(k)1000Graphinghecto-(h)100deka-(dk)10BaseUnitdeci-(d)1/10centi-(c)1/100milli-(m)1/10007. The two variables that are labeled on a graph are the ______ & ______.a. Independent, dependentb. Dependent, constantc. Independent, markedd. Dependent, data8. An independent variable is one thate. A person takes data on.f. Does not matter to the experiment.g. A person sets up or chooses before the experiment begins.h. Is labeled on the y-axis of a graph.9. A dependent variable is one thati. Is labeled on the y-axis.j. A person takes data on.k. Changes during the experiment.l. All of the above.Page 3 of 19

Directions: Graph the following data. Be sure to make a COMPLETE graph. (Hint: thegraph is worth 10 points.)Time (h) Distance (km)1 1.23 2.07 2.510 3.6Title:10. What is the independent variable?11. What is the dependent variable?12. What is the slope of the line? ______________________ (SHOW YOUR WORK)Rise (vertical change)Run (horizontal change)Rise divided by the runPage 4 of 19

Motion13. Directions: Fill in the blanks with the correct information for time, distance andspeed.TimeDefinition Units Variable EquationDistanceSpeedAccelerationPage 5 of 19

14. Is the relationship between speed and distance proportional OR inverse?15. Is the relationship between speed and time proportional OR inverse?16. A goat on wheels moves 62 meters across the barnyard in a time of 12 seconds toeat a bag of popcorn. What is the speed of the goat?GivensSolving ForEquation Substitution Answer with Units17. A chocolate cake is rolling down a hill at a speed of 4 m/s. How long does it take toroll 195 m?GivensSolving ForEquation Substitution Answer with Units18. A child slides down a playground slide a distance of 4 m in 3 seconds. How fast ishe sliding?GivensSolving ForEquation Substitution Answer with UnitsPage 6 of 19

19. How far can a wheel roll in 22 seconds at a speed of 9 m/s?GivensSolving ForEquation Substitution Answer with Units20. If an Oreo cookie rolls down a 59 cm table in 2.5 s, how fast is it rolling?GivensSolving ForEquation Substitution Answer with Units21. How long does it take Mr. Hoffman to bike 1275 m at the pace of 24 m/s?GivensSolving ForEquation Substitution Answer with Units22. The Metra travels from Mount Prospect to Des Plaines at an average speed of 0.89km/min. If it is 10 km from station to station, then how long does it take for Mr. Z to makethat trip?GivensSolving ForEquation Substitution Answer with UnitsPage 7 of 19

23. You see a Leprechaun running with a pot of gold. You know his tree house is 1423meters away. If he is running at a speed of 3 m/s, how long will it take him to get there?GivensSolving ForEquation Substitution Answer with UnitsDirections: Choose the word or phrase that best answers the question.24. Which of the following do you calculate when you divide total distance traveled bythe total travel time?a. average speedb. constant speedc. variable speedd. instantaneous speed25. What is the proper unit of speed?26. What is the proper unit of acceleration?27. In which of the following conditions does the car NOT accelerate?a. A car moves at 80 km/hr on a flat, straight highway.b. The car slows from 80 km/hr to 35 km/hr.c. The car turns a corner.d. The car speeds up from 35 km/hr to 80 km/hr.28. Another term for increasing speed is29. Another term for decreasing speed isPage 8 of 19

30. What are the two variables that speed depends on?31. What are the two variables that acceleration depends on?32. Is the relationship between acceleration and speed proportional OR inverse?33. Is the relationship between acceleration and time proportional OR inverse?34. What is the acceleration of a Pleasant Valley cross country runner who speeds upfrom rest (0 m/s) to 8 m/s in two seconds?GivensSolving ForEquation Substitution Answer with Units35. What is the deceleration of a Pleasant Valley driver’s education car which slowsdown from 120 km/hr to 30 km/hr in 30 minutes? (HINT: watch your units!)GivensSolving ForEquation Substitution Answer with UnitsPage 9 of 19

Newton’s Laws of Motion and Force36. Have you ever been riding in a car when a driverstopped suddenly? How did your body move as the carcame to a stop? Did it feel like your body was movingforward? When you felt this happening you experiencedNewton’s first law of motion. Newton’s first law of motion says that37. In the car your body was in motion, traveling at the same speed as the car. Whenthe car stopped suddenly, your body stayed in motion. What would happen if youwere not wearing a seatbelt and the car was traveling very fast?38. This idea is called INERTIA. Explain why your body feels like it is being pushed backwhen the cars starts to accelerate again:39. If a ping pong ball and a basketball were both dropped at the same time from theroof of PV, which would hit the ground with a greater force?40. Newton stated this relationship in his second law, that41. List two other situations where Newton’s 2 nd Law may apply:Page 10 of 19

44. What is a force? _________________________________________________________45. What is friction? _________________________________________________________46. What is gravity? _________________________________________________________47. What is the metric unit for gravity? __________________________________________48. Gravity acts on the mass of an object, causing the object to have ________________.49. Mrs. Britz pushes a car with a force of 65 N. The force of friction between the wheelsand the floor is 15 N. What is the net force Mrs. Britz pushes the cart with?50. How can you double the acceleration of an object if you cannot alter the object’smass?51. A tennis player runs across the court and into the net with a force of 95 Newtons.What is her acceleration if she has a mass of 70 kg?GivensSolving ForEquation Substitution Answer with Units52. A net force of 10 N is applied to an object having a mass of 2 kg. What is theacceleration of the object?GivensSolving ForEquation Substitution Answer with UnitsPage 12 of 19

53. A net force of 20 N is applied to an object having a mass of 2 kg. What is theacceleration of the object?GivensSolving ForEquation Substitution Answer with Units54. If Skater A is pushing Skater B, why does Skater A move?55. Suppose that the skaters repeat the demonstration above again. This time Skater Bis holding a 10 kg mass. If Skater A pushes exactly as he did the first time, will Skater A’smotion be different this time? Explain your answer.56. If Jupiter has a gravitational acceleration that is 6 times greater than Earth’s, what isthe mass of an object that weighs 248 N on Jupiter?GivensSolving ForEquation Substitution Answer with UnitsPage 13 of 19

Work and Power57. What is the unit for work? _____________________________________58. What is the unit for power? ___________________________________59. What is the unit for time? ____________________________________60. What is the value for gravity? ________________________________61. What is the equation to calculate work? ________________________62. What is the equation to calculate power? _______________________63. If you move a box with 100 Newtons of force 10 meters, how much work was done?What are you looking for?GivensEquation Substitution Answer with Units64. If you do 50 Joules of work are done to move a box 5 meters, how much force was used?What are you looking for?GivensEquation Substitution Answer with Units65. Darth Vader unleashed the power of the dark side (727 W) on the unsuspecting Jedi. If hedid 1225 J of work, how much time did it take?What are you looking for?GivensEquation Substitution Answer with UnitsPage 14 of 19

66. If 100 Joules of work are done by lifting a box 1.5 meters then how much mass was thebox?What are you looking for?GivensEquation Substitution Answer with UnitsSimple Machines67. As the slope of an inclined plane is increased,a. the amount of work needed toreach a height decreases.c. the amount of distance neededto reach a height increases.b. the amount of force needed toreach a height decreases.d. the amount of force needed toreach a height increases.68. A simple machine like a pulley makes work easier bya. increasing the force needed byincreasing the distance.c. decreasing the force needed byincreasing the distance.b. increasing the force needed bydecreasing the distance.d. decreasing the force needed bydecreasing the distance.69. When you go to the top of a staircase, the most effective way to increase yourpower is to70. Which of the following is an example that shows work being done?a. Pushing against a wall b. Holding up a sack of groceriesc. Pushing a shopping cart in astored. Sitting in a chairPage 15 of 19

71. Which of the following levers would require the most force to lift the box? The box isthe same weight in each picture, and the arrow shows where force is being applied.a. b.c.d. The force applied is equal in allthree examples.72. List an example of a first-class, second-class, and third-class level. Explain why eachis a good example of that type of lever.First-classSecond- classThird-class73. If you needed to get a grand piano in a third floor apartment, which simplemachine would be the most useful?74. You cannot get a window in your house opened. You have tried everything, butyou cannot apply enough force. Which simple machine will help you apply enoughforce to get it to budge?Energy75. What is the Law of Conservation of Energy?76. What does the Law of Conservation of Energy mean for regular devices or objectsthat use energy?Page 16 of 19

77.Complete the chart below:Form of Energy What it Means ExamplesMechanicalThermalChemicalElectromagneticNuclear78. Explain how each type of energy (other than nuclear) is used in a car.79. A 2000 kg car is cruising along the road with a velocity of 30 m/s. What is the KE ofthe car?GivensSolving ForEquation Substitution Answer with UnitsPage 17 of 19

80. What is the potential energy of a 100 kg man that is 20 m above the floor?GivensSolving ForEquation Substitution Answer with Units81. A 0.5 kg bird is flying at a height of 30 m with a speed of 2 m/s.Givensa. What is its potential energy?Solving ForEquation Substitution Answer with UnitsGivensb. What is its kinetic energy?Solving ForEquation Substitution Answer with Unitsc. What is its total energy?Page 18 of 19

kilo-(k)1000hecto-(h)100deka-(dk)10BaseUnitdeci-(d)1/10centi-(c)1/100milli-(m)1/1000Page 19 of 19