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Physics Name ____________________________ Ms. Nettler Prd. _______Date . _________________ Final Exam Review. Your final exam will consist of a written exam that will be taken in class during exams week. It will consist of a multiple choice test and possibly a free response section. There will be problems that will require mathematical calculations on this exam. The exam will basically cover any information you have been given this year. It is a requirement that anything you were given this year be kept in your notebook, or notebooks. It is your responsibility to get this information if you do not have it. Things you should review for the final exam: 1. All class notes taken this year. This will not be much because most of the notes you need were given to you in the form of handouts, not lecture notes. 2. Any handouts you received this year especially the Hewitt multiple choice tests you received for chapters 2-8 in the Hewitt book, and chapter 34. 3. All test and quizzes. 4. All in class problems. 5. All homework problems. 6. The equation sheet located on Ms. Nettler‟s Portal – You will receive equations for the test but it is up to you to know how and when to use each one. As a general observation, most students do prepare well for exams. Exam week is a very difficult week for students. We as teachers realize this; however, it is something you will be faced with as long as you are in school. I would advise spending at least 5 hours (minimum) studying for this and any exam. That does not mean that you should spend 5 hours studying the night before. You need to prepare over a longer period of time. This means that you may not be able to “go out” or otherwise have a social life the weekend prior to, and during the week of exams. You should plan now to be studying most of that weekend, and in the evenings of that week. If you wait until the night before this exam to begin reviewing for this exam, you will most likely not do well. Do not expect to review 36 weeks worth of material in an hour or two. Break studying down into manageable chunks by topic if that will help. Make an appointment to see or e-mail Ms. Nettler immediately if you have any questions. The main topics covered by quarter: Quarter 1 Quarter 3 Metric Units Momentum and Collisions Motion o Elastic and Inelastic o Speed/Velocity/Acceleration/ Energy Distance/Displacement o Types of energy Freefall, terminal velocity o Kinetic and Potential Newton‟s Laws of Motion Work and Power Forces Quarter 4 Quarter 2 Simple Machines and Mechanical Friction Advantage Significant Figures Electricity Scientific Notation o Ohm‟s Law Center of Gravity o Current/Resistance/Voltage Momentum and Impulse o Series and Parallel Circuits Projectile Motion Labs we have done over the entire year: (you will be tested on knowledge that was gained and reinforced through these activities and labs; they are worth looking through, especially conclusions and questions) o Metric Units Measuring Lab o Go Go Go lab, constant velocity, graphing o Walk the Line, walking in front of CBRs to create computer graphs – distance, displacement, velocity (-/+) o Freefall – dropping things from stadium, calculating „g‟ o Rocket Project – Newtons laws and forces o Friction Lab –force sensors to determine static and kinetic friction o Collision Lab – crashing carts and determining Vi ,Vf, and momentum o Human Power Lab – physically working to calculate power output o Rube Goldberg project – simple machines o Virtual Circuit Lab – circuit building online, series and parallel o Circuit Lab Practical – real circuit building, series and parallel o Virtual Projectile Lab – determining the effect of mass, launch angle, and initial velocity on a projectile o Catapult Project – projectile motion Electricity Questions for review. 1. Are batteries AC or DC? 2. What are the three parts of an atom 3. What parts of an atom are in the nucleus 4. What parts of the atom make up its weight? 5. What is a conductor 6. What is a resistor 7. Is lightning static electricity or current electricity? 8. What is current and what unit is it measured in? 9. What is an ohm and what is it used for? 10. Which has more resistance, a copper wire or a heater coil? 11. What is resistance? 12. Do electrons flow in one end of your light bulb circuit and out the other when connected to a battery? 13. How about when connected to a hand generator? 14. Will a three bulb parallel circuit light up very brightly with just one battery? 15. Will a three bulb series circuit light up very brightly with just one battery? 16. Why can a bird sit on a wire and not get shocked? 17. What is the material inside of a battery made of? 18. Will the battery be used up faster in a two bulb parallel circuit or a two bulb series circuit? 19. Name a material that can act as an insulator 20. Can a motor generate electricity? Projectile Motion o Study the quiz you just received back as well as practice homework problems. o Projectile motion did not bring out any new equations, just different ways to use the equations we already had for motion. Practice problems: If you get stuck, try writing out what you are given and what you are trying to find. You may be amazed how much this can help. Use your equation sheet. MOTION (these include constant velocity, changing velocity, acceleration, distance/displacement, freefall and projectile motion) generally the first page of your equation sheet. 1. A truck is traveling at a velocity of 32.0m/s passes a speed marker. 22.0 Seconds later it passes a second marker. How far apart are the two markers? 2. A car is traveling along a highway at 24.0 m/s. How long will it take the car to travel 500. m 3. A motorcycle starting at rest accelerates at 2.6 m/s2 for 10 seconds. How fast is the motorcycle now going? 4. A bowling ball is dropped from a cliff and after 3.25 seconds hits the ground below. How fast is the bowling ball going when it hits the ground? How High is the cliff? 5. John is riding his bike and speeds up from 12.0 m/s to 18.0 m/s in 4.0 seconds. Calculate his acceleration. If John and his bike have a mass of 120 kg, how much force did he use? 6. A ball is rolling down a ramp with an acceleration of 3.2 m/s2. How fast will the ball be going after 3.15 seconds? How far will it roll in that same amount of time? 7. Explain what a = 3.0m/s2 means for a boy on his bike. 8. A car moving at 15 m/s drives off of a 15 m high cliff. How far from the base of the cliff will the car hit the ground? FORCE PROBLEMS 9. Calculate the force needed to accelerate a 2.0 kg ball from 0 to 12 m/s in 4 seconds WORK AND POWER PROBLEMS 10. Calculate the work needed to move a 12 N box 15 meters 11. Calculate the force needed to lift a 150 kg elevator at constant velocity a height of 12 m if the elevator is moving at 8.2 m/s. 12. How much power does a person dissipate if they do 300 Joules of work over a period of 25 seconds? MOMENTUM, IMPULSE, AND COLLISION PROBLEMS 13. A ball with a mass of 12 kg traveling at 4 m/s strikes a 2nd ball with a mass of 8 kg that is at rest. If the first ball slows down to 3 m/s, how fast is the 2nd ball now going? 14. John has a mass of 75 kg. He is running at 6.0 m/s and jumps onto a 60 kg cart. How fast are he and the cart now traveling (hint : Inelastic) 15. A .050 golf ball is struck with 12 N of force for a period of 0.012 seconds. How fast is it going after being hit? ENERGY PROBLEMS 16. A 7 kg ball on top of a 20 m hill is at rest and begins rolling. How fast will it be going at the bottom of the hill? 17. A tire with a mass of 12 kg tire is rolling at 20 m/s and then rolls down a 15 m high hill. How fast will it be going at the bottom? How fast will it be going when it is halfway down? 18. Explain how electrical energy we get from plugging something into the wall outlet could be traced from other different forms of energy. 19. Calculate the kinetic energy of a ball rolling at 4 m/s if it has a mass of 3 kg. 20. Calculate the potential energy of a skier at the top of a 100 m hill has a mass of 55 kg. 21. If the skier with the mass of 55 kg starts at rest at the top of the 100 m hill, how fast will she be going at the bottom? FRICTION PROBLEMS 22. Calculate the coefficient of static friction if a wooden crate requires 50 N of force to get it moving and it weighs 120 N. 23. What is the frictional force acting on a moving object that weighs 25 N if the coefficient of kinetic friction is 0.4? 24. Calculate the force needed to move an object that weighs 200 N if the coefficient of friction is 0.3. SIMPLE MACHINES AND MECHANICAL ADVANTAGE PROBLEMS 25. Calculate the mechanical advantage of a simple machine if only 50 N of force is required to lift something that weighs 250 N. 26. What is the mechanical advantage of an incline plane that has an incline length of 10 meters and is 3 meters high? 27. Explain which classes levers will give you a high mechanical advantage and which classes will not provide you with an advantage. ELECTRICITY 28. What is the resistance in a circuit if there are 12 amps running through it with a voltage of 120 volts? 29. Calculate the amount of current if connected to a 12 V battery is a 3 ohm resistor. 30. Explain why your house is wired in Parallel and not Series. CENTER OF MASS/GRAVITY 31. Explain why dinosaurs had long tails. 32. Explain why women, more often than men are able to put their heads against the wall and pick up a chair. PRACTICE MULTIPLE CHOICE QUESTIONS 11. John pedals his bicycle up to a speed of 18 m/s in 6 seconds. What force did John exert to reach that velocity if he and his bike have a combined total mass of 190 Kg? a. 3 N b. 29.4 N c. 570 N d. 10.5 N e. 1140 N 12. a ball is thrown directly upward at 33 m/s. Approximately how long will it remain in the air? a. 3 seconds b. 6.5 seconds c. 9.8 seconds d. 33 seconds 20. Meters per second squared means: a. That the seconds are squared when multiplied in the calculator b. That the speed will change by a certain amount every second c. That we need to divide the speed by the seconds squared d. The time should be multiplied by itself before dividing the distance by it 21. A projectile is shot into the air. Its vertical acceleration is: a. Unknown without more information b. Equal to the launch angle c. -9.8 m/s2 d. 0 m/s2 22. Neglecting air resistance, the best angle to launch a projectile to have it travel a maximum distance is a. 90 degrees b. 45 degrees c. 30 degrees d. 60 degrees e. 75 degrees 23. When a baseball is thrown into the air at its highest point a. Its vertical velocity is unchanged b. Its vertical velocity is zero c. Its vertical velocity is positive d. Its vertical velocity is negative e. Its vertical velocity is - 9.8 m/s2 24. When a baseball is thrown into the air at its highest point a. Its horizontal velocity is unchanged b. Its horizontal velocity is zero c. Its horizontal velocity is down d. Its horizontal velocity is negative e. Its horizontal velocity is - 9.8 m/s2 25. Which is a type of force a. Mass b. Volume c. Matter d. Weight e. Density 26. Mass is a. The amount of space an object occupies b. The amount of matter in an object c. The size of an object d. The weight of an object 27. Which is not an SI base unit? (SI stands for International System.... (the term is actually French) but this is the metric system) a. Seconds b. Kilograms c. Meters d. Newtons 28. There are ________ centimeters in one meter. a. 1000 b. 100 c. 10 d. 0.1 e. 0.01 29. There are ________ grams in one kilogram. a. 1000 b. 100 c. 10 d. 0.1 30. 48 inches is equal to _______ meters Given: 1 inch = 2.54 cm a. 4 b. 1.8 c. 1.22 d. 4.8 e. 18.9 31. Acceleration is measured in a. Velocity b. Newtons c. Meters per second d. Meters per second squared e. Watts 32. Which is a vector quantity a. speed b. force c. time d. distance 33. A bike travels at a constant speed of 4 m/s for 5 seconds. How far does it go? a. 40 m b. 196 m c. 39.2 m d. 20 m 34. The purpose of fins on a rocket is: a. To help raise the center of gravity b. To help reduce air resistance c. To help the rocket fly straight d. To make the rocket more aerodynamic 35. How long does it take a car traveling 48 meters per second to stop if it can apply the brakes and accelerate at –12 m/s2? a. 4 s b 4 m/s c. 8 m/s d. 8 s e. 2 s 36. A vector drawn 15 mm long represents a velocity of 30 m/s. How long should you draw a vector to represent a velocity of 20 m/s? a. 12 mm b. 10 mm c. 15 mm d. 5 mm 37. A ball is dropped from a height of 10 meters to the ground below. What is its displacement? a. 10 m b. 98 m c. 9.8 m d. 1.02 m 38. Can the velocity of an object change when its acceleration is constant? a. Yes b. No 39. Can an object have a positive velocity and a negative acceleration at the same time? a. Yes b. No 40. If the following objects were dropped from the library window, for which object could we not ignore air resistance? a. An apple b. A bowling ball c. A feather d. A goat 41. Calculate the force produced horizontally by the tires on the road for a 735 kg car accelerating at 7.6 m/s 2 a. 5586 N b. 5586 m/s c. 97 N d. 97 J e. 5586 J 42. A bag is dropped from a hovering helicopter. When the bag has fallen 2.00 seconds, what is its velocity? a. –19.6 m/s b. –9.8 m/s c. 12 m/s d. 19.6 m/s e. –12 m/s 43. A bag is dropped from a hovering helicopter When the bag has fallen for 3.00 seconds, how far has it fallen? a. –29.4 m b. –9.8 m c. 44.1 m d. 20 m e. –44.1 m 15. What is the momentum of a 1500 kg car traveling at 20 m/s? a. 30000 kg m/s b. 75 kg m/s c. 7.5 kg m/s d. 79.9 m/s e. 16.6m 16. If you want to hit a golf ball as far as possible why should you “follow through”? a. To provide the maximum force on the ball b. To increase the time the force is applied c. To Increase the Impulse d. Both B and C are correct 17. A ball is thrown up in the air with a velocity of 34 m/s. How long will it remain in the air? a. 3.47 s b. 9.8 s c. 2.7 s d. 6.94 s e. 3.33 s 18. At what point in a water rockets flight would it be at terminal velocity? a. At the top of its path b. On the way up when it runs out of water c. On the way down when it is speeding up due to gravity d. On the way down after the parachute has opened 19. What net force is required to continue raising an elevator at a constant velocity of 3.0 m/s upward? a. 9.8 N b. 3.26 N c. 29.4 N d. 840 N e. 0 N 44. The idea that force affects acceleration is best represented in which of Newton‟s Laws? a. First b. Second c. Third 45. A dog has a mass of 40.0 kg. What is its weight in Newtons? a. 392 N b. 700 N c. 40 N d. 4.1 N 46. A car travels due east for 45 meters and then due west for 65 meters. What is the magnitude of the cars final displacement? a. 15 b. 0.69 c. 1.44 d. 20 e. 110 47. Which is not a difference between speed and velocity a. Speed is a scalar quantity and velocity is a vector quantity b. Speed does not have to have a specific direction and velocity does c. When speed is constant you cannot accelerate and when velocity is constant you can d. Speed is measured in m/s and velocity is measured in m/s2 48. The space shuttle takes off and enters space traveling 17,000 miles per hour. The astronauts then turn off the engines. How much force is needed to keep the shuttle going 17,000 miles per hour? a. Twice the force with which it was fired b. Half the force with which it was fired c. The same force with which it was fired d. No force is needed to keep it going 49. A baseball pitcher throws a ball to the batter. When the ball is halfway to the batter the forces acting on the ball are a. Gravity and the force of the throw b. Gravity, air resistance and the force of the throw c. Air resistance and the force of the throw d. Gravity and air resistance e. Just air resistance 50. A boat is traveling at a velocity of 8 m/s across a river perpendicularly to the shore. The river is flowing at 6 m/s. What is the total velocity of the boat with regard to the shore? a. 14 m/s c. 10 m/s b. 1.33 m/s10 m/s d. 2 m/s 51. How much does a 2 Kg bag of nails weigh? a. 9.8 m/s2 b. 9.8 Kg c. 19.6 N d. 19.6 Kg e. 19.6 lbs 52. Which of the following numbers is correctly paired with its number of significant digits? a. 300.0 :1 b. 23470 :5 c. 25.780 :4 d. 27.30 :4