1. 200 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 200 300 400 500 100 Describing Motion Speed Acceleration Distance- Time Graphs Velocity- Time Graphs 300

2. Motion is a change in — a.Time. b.Speed. c.Velocity. d.Position.

3. d. position.

4. One of these is NOT a unit of distance. Which one? a.Mile b.Inch c.Meter d.newton

5. d. Newton.

6. Which of the following are in the correct order from smallest to largest? a.Millimeter, centimeter, meter, kilometer b.Millimeter, meter, centimeter, kilometer c.Centimeter, millimeter, meter, kilometer d.Meter, millimeter, centimeter, kilometer

7. a. Millimeter, centimeter, meter, kilometer

8. If you ride your bicycle down a straight road for 500 m, then turn around and ride back, your distance is ______ your displacement. a.Equal to b.Greater than c.Less than d.Can’t be determined.

9. b. Greater than.

10. Which of the following does NOT indicate velocity? a.14 m/s SSE b.40 km/h toward the town square. c.80 km/h going from New York to Dallas d.28 km from Los Angeles to Catalina Island.

11. d. 28 km from Los Angeles to Catalina Island

12. The distance traveled by an object divided by the total time it takes to travel that distance is called — a.Average velocity. b.Average speed. c.Average acceleration. d.Activity.

13. b. Average Speed.

14. In order to determine speed, you must know — a.Time. b.Distance. c.Both A and B. d.Neither A nor B.

15. c. Both A and B.

16. What is the speed of an object at rest? a.15 km/h b.0 km/h c.1 km/h d.Cannot be determined

17. b. 0 km/h

18. The difference between speed and velocity is that velocity includes — a.Direction. b.Distance. c.Time. d.Weight.

19. a.Direction.

20. The speed you read on a speedometer is — a.Constant speed. b.Average speed. c.Velocity. d.Instantaneous speed.

22. Acceleration is defined as the change in velocity divided by — a.Speed. b.Final velocity. c.Time d.Distance.

23. c. Time.

24. The SI unit for acceleration is — a.mph b.ft/sec 2 c.m/s 2 d.Δv ÷ t

25. c. m/s 2

26. If you ride your bike up a hill, then ride down the other side, your acceleration is — a.All positive. b.All negative. c.First positive, then negative. d.First negative, then positive.

28. A bicycle rider would NOT be accelerating if her — a.Direction and speed were unchanged. b.Direction changed and speed was constant. c.Speed increased and direction was unchanged. d.Speed decreased.

29. a. Direction and speed were unchanged.

30. Which of the following is acceleration? a.A car traveling 33 km/h slows to 25 km/h. b.A car traveling 33 km/h speeds up to 42 km/h. c.A car traveling 35 km/hr north turns east and stays at 35 km/h. d.All of the above.

32. At which of the following points is the speed the greatest? a.Point 1 b.Point 2 c.Point 3 d.Point 4

33. b. Point 2

34. A single point on a distance- time graph tells the — a.Instantaneous speed. b.Average speed. c.Constant speed. d.Average velocity.

35. a. Instantaneous speed.

36. A horizontal line on a distance- time graph indicates — a.Slope. b.Positive speed. c.Zero speed. d.No acceleration.

37. c. Zero speed

38. What variable is usually plotted on the x-axis? a.uncontrolled b.dependent c.independent d.standard

39. c. independent

40. Calculate the speed of the object from the position vs. time graph. a.3 m/s b.2 m/s c.0.75 m/s d.0.5 m/s

42. On this graph, the dependent variable is — a.Distance. b.Speed. c.Acceleration. d.Time.

43. b. Speed.

44. On a velocity-time graph, a line with a negative slop indicates that the object is — a.Speeding up. b.Slowing down. c.Accelerating. d.Traveling at a constant speed.

45. b. Slowing down

46. In this speed vs. time graph, the object at point C has — a.positive acceleration. b.zero acceleration. c.negative acceleration. d.Constant speed.

47. c. Negative acceleration.

48. A horizontal line on a velocity-time graph shows ____ acceleration. a. Positive. b. Negative. c. Changing. d. Zero.

49. d. zero

50. Use this graph to predict the speed of the car after one minute. a.200 cm/sec b.210 cm/sec c.220 cm/sec d.250 cm/sec

52. The slope of a velocity vs. time graph is equal to — a.Acceleration. b.Speed. c.Distance. d.None of these.

53. a. Acceleration.