Physics Unit 2 – Motion Name: _______________________ True/False Indicate whether the statement is true or false. ____ 1. An object can move relative to one person and be still relative to another person. ____ 2. A frame of reference is a stationary location that is used to compare other locations ____ 3. The frame of reference that is used to understand the motion of the Earth relative to the solar system is the North Pole ____ 4. On a motion graph, the steeper the slope the slower the object is going. Multiple Choice Identify the choice that best completes the statement or answers the question. ____ ____ ____ ____ 5. On a Distance vs Time graph, the slope of the line is related to the objects a. Position c. Speed b. Motion d. Acceleration 6. On a Velocity vs Time graph, the slope of the line is related to the objects a. Position c. Speed b. Motion d. Acceleration 7. Velocity includes both a. speed and direction c. meters and seconds b. motion and a reference point d. distance and time 8. Which is not a speed? a. km/hr c. m/s b. miles d. ft/min Use the following graph to answer questions # 9-13 ____ 9. What is happening from time = 0 to time = 5? a. The object is accelerating from 0 b. The object is moving at constant speed away from the origin ____ 10. What is happening from time = 5 to time = 10? a. The object is changing directions b. The object is moving at constant speed c. The object is going up a hill d. You cannot determine the motion of the object from this graph c. The object is stationary d. You cannot determine the motion of the object from this graph ____ 11. What is happening from time = 10 to time = 13? a. The object is moving back toward the origin b. The object is slowing down c. The object is going down the hill d. You cannot determine the motion of the object from this graph ____ 12. At which point is the object moving the fastest? a. From time = 0 to time = 5 c. From time = 10 to time = 13 b. From time = 5 to time = 10 d. You cannot determine the speed of the object from this graph ____ 13. What is happening from time = 0 to time = 5? a. Average acceleration = 1 m/s2 d. Average speed = 5 m/s b. Average acceleration = 5 m/s2 e. Average velocity = 1 m/s north c. Average speed = 1 m/s f. Average velocity = 5 m/s north ____ 14. On a motion graph.... a. distance is on the y axis d. speed is on the x axis time is on the x axis time is on the y axis b. distance is on the x axis e. time is on the y axis time is on the y axis acceleration is on the x axis c. acceleration is on the y axis f. acceleration is on the y axis motion is on the x axis time is on the x axis ____ 15. Ms. Altman is planning her next trip. This time she is on a faster plane, and it travels 525 miles per hour. If her flight is 8.5 hours, how far will she travel? a. 65.63 miles c. 525 miles b. 4,462.5 miles d. There is no way to solve this with the information given. ____ 16. Ms. Altman is on a plane that travels 460 miles per hour. If San Francisco is 510 miles away, how long will it take the plane to get there? a. 0.9 hours c. 50 hours b. 1.11 hours d. There is no way to solve this with the information given. ____ 17. A skater increases her velocity from 2.0 m/s to 10.0 m/s in 4.0 seconds. What is the skater’s acceleration? a. 20 m/s2 c. 2 m/s2 b. 10 m/s2 d. not enough information to solve ____ 18. Sam is skates at 15 m/s for 5 s. Which of the following would be used to solve for distance? a. d = St c. S = d/t b. d = S/t d. t= d/S Use the graph to answer questions # 19-20 ____ 19. Which runner is faster? a. Runner 1 c. The runners ran the same speed b. Runner 2 d. The fastest runner cannot be determined ____ 20. How can you tell which line represents the fastest speed? a. The line should be longer c. The line should be steeper b. The line should be shorter d. The line should have a slope of 0 Matching Match the lines to their description a. Accelerating b. Constant Speed c. Decelerating d. Stationary (at rest) ____ ____ ____ ____ ____ ____ ____ ____ 21. 22. 23. 24. 25. 26. 27. 28. Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 a. Acceleration b. Displacement c. Distance d. Speed e. Velocity ____ 29. The cat ran 1.5 feet south to catch the bird ____ 30. The student ran 400 meters in 10 minutes during PE ____ 31. The Olympic athletes run 800 meters around a track, ending where they start, and the Gold medal winner completed the run in 20.5 seconds ____ 32. The school is one mile from my house ____ 33. The plane traveled 450 miles north in 1.5 hours ____ 34. It took the doctor 15 minutes to drive 5 miles east from the beach to the hospital ____ 35. The race car can go from 0 to 60 mph in only 4 seconds ____ 36. The trolley travels 100 miles daily to reach several locations ____ 37. The Breast Cancer Charity Run is 5km through Balboa Park ____ 38. The satellite was orbiting around the moon travelling 800km in 6 hours ____ 39. The rocket took off from the NASA site and reached 1500 m/s in only 1 minute. A car accelerates at a rate of 3.0 m/s2. If its original speed is 8.0 m/s, how many seconds will it take the car to reach a final speed of 25.0 m/s? a. missing d. 8.0 m/s b. looking for e. 25.0 m/s c. 3.0 m/s2 ____ ____ ____ ____ ____ 40. 41. 42. 43. 44. d= t= v0 = vf = a= A bear spies some honey and takes off from rest, accelerating at a rate of 2 m/s2. If the honey is 16 m away, how fast will his snout be going when it reaches the treat? a. missing d. 16 m b. looking for e. 0 m/s c. 2 m/s2 ____ ____ ____ ____ 45. 46. 47. 48. d= t= v0 = vf = ____ 49. a = A dog runs down his driveway with an initial speed of 5 m/s, then uniformly increases his speed to 10 m/s in 5 s. What was his acceleration? a. missing d. 10 m/s b. looking for e. 5 s c. 5 m/s ____ ____ ____ ____ ____ 50. 51. 52. 53. 54. d= t= v0 = vf = a= Problem 55. You MUST SHOW YOUR WORK for full credit Preston goes on a camel safari in Africa. He travels 5 km north, then continues on the safari for another 2.5 km north. Then they head south for 0.75 km. a. What distance did he cover? b. What was his displacement? 56. You MUST SHOW YOUR WORK for full credit Anthony walks to the pizza place for lunch. He walks 4 km east, he realized he passed it and then walked 1 km west. a. What distance did he cover? b. What was his displacement? 57. You MUST SHOW YOUR WORK for full credit Brittney is on the starting line to run a track race. The distance around the track is 400m. She starts the race and runs 400m around the track. She ends up in the same place where she started. a. What distance did she cover? b. What was her displacement? 58. You MUST SHOW ALL YOUR WORK to get full credit While traveling along a highway a driver slows from 24 m/s to 15 m/s in 12 seconds. What is the automobile’s acceleration? 59. You MUST SHOW ALL YOUR WORK to get full credit A car traveling at a speed of 30.0 m/s encounters an emergency and comes to a complete stop. How much time will it take for the car to stop if it decelerates at -4.0 m/s2? 60. You MUST SHOW ALL YOUR WORK to get full credit If a car can accelerate at 25 m/s2 what would be its final speed after 5.0 seconds if its starting speed were 50 m/s? Phys Unit 2 - Motion Answer Section TRUE/FALSE 1. 2. 3. 4. ANS: ANS: ANS: ANS: T T F F PTS: PTS: PTS: PTS: 1 1 1 1 C D A B B C A C C A B B C A A C PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 MULTIPLE CHOICE 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: MATCHING 21. 22. 23. 24. 25. 26. 27. 28. ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: C A B A C A C D PTS: PTS: PTS: PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 1 1 1 29. 30. 31. 32. 33. 34. ANS: ANS: ANS: ANS: ANS: ANS: B D E C D E PTS: PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 1 35. 36. 37. 38. 39. ANS: ANS: ANS: ANS: ANS: A C C D A PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 40. 41. 42. 43. 44. ANS: ANS: ANS: ANS: ANS: A B D E C PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 45. 46. 47. 48. 49. ANS: ANS: ANS: ANS: ANS: D A E B C PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 50. 51. 52. 53. 54. ANS: ANS: ANS: ANS: ANS: A E C D B PTS: PTS: PTS: PTS: PTS: 1 1 1 1 1 PROBLEM 55. ANS: 8.25km 6.75km north PTS: 1 56. ANS: 5km 3km east PTS: 1 57. ANS: 400m 0m PTS: 1 58. ANS: 0.75 m/s2 PTS: 1 59. ANS: ? PTS: 1 60. ANS: ? PTS: 1
