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Name: ______________________ Class: _________________ Date: _________ ID: A Physical Science Formative Motion Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. If you ride your bicycle down a straight road for 500 m then turn around and ride back, your distance is ____ 2. ____ 3. ____ 4. ____ 5. ____ 6. ____ 7. ____ 8. ____ 9. ____ 10. ____ 11. ____ 12. ____ your displacement. a. greater than c. less than b. equal to d. can’t determine If you ride your bicycle down a straight road for 300 m then turn around and ride back for 100 m, your displacement is. a. 400 m c. 200 m b. 100 m d. zero By calculating the change in position, one can determine ____. a. time c. velocity b. speed d. displacement Acceleration is a change in ____. a. time c. velocity b. speed d. position The speed you read on a speedometer is ____. a. instantaneous speed c. average speed b. constant speed d. velocity The relationship among speed, distance, and time is ____. a. t = s/d c. s = dt b. d = t/s d. s = d/t A single point on a distance-time graph tells the ____. a. instantaneous speed c. constant speed b. average speed d. average velocity A merry-go-round horse moves at a constant speed but at a changing ____. a. velocity c. inertia b. balanced force d. unbalanced force The equation used to find acceleration is a = ____. a. vf – vi/t c. vi – vf /t b. v/t d. vi + vf/t A horizontal line on a distance/time graph shows ____ speed.. a. positive c. zero b. negative d. instantaneous Inertia varies depending on ____. a. force c. velocity b. mass d. motion A steeper line on a distance / time graph will indicate that an object is doing what? a. accelerating c. moving more slowly b. moving fast d. changing speed quickly 1 Name: ______________________ ____ ID: A 13. If one is graphing the number of different models of cars in a parking lot, they would probably use what ____ 14. ____ 15. ____ 16. ____ 17. kind of graph? a. Line graph c. Pie Chart b. Bar chart d. Scatter graph The dependent variable usually goes on which axis? a. X c. Z b. Y d. It depends upon the graph A preconcieved notion, or expected outcome, is a type of what? a. constant c. control b. variable d. bias Which of the following statement about distance / time graphs is true and possible? a. A line that is straight up and down c. The closer the line is to straight up and represents an object that is moving down (steeper), the faster the object is really fast going b. A line that is straight up and down d. A horizontal line indicates an object represents an object at rest that is moving very fast What is true and possible about race cars going around a circular track? a. They have high speed and high velocity c. They have high speed and changing velocity b. They have high speed and low velocity d. One is unable to determine their average speed or velocity Problem 18. A cross-country runner runs 10 km in 40 minutes. What is his average speed? / / / / / / / 19. Find the acceleration of a car that goes from 32 m/s to 96 m/s in 8.0 s. / / / / / / / / 2 Name: ______________________ ID: A 20. How many centimeters are there in five (5) feet? IF YOU DO NOT SHOW WORK, AND UNITS, THERE IS NO CREDIT. / / / / / / / / / / / 21. If a body is accelerating at 4.5 m/s/s, how fast will it be going in 3.5 minutes? SHOW YOUR WORK AND UNITS FOR ANY CREDIT / / / / / / / / / 22. If a car is moving at 35.0 kilometers per hour, what is its speed in meters per second? SHOW YOUR WORK AND UNITS FOR CREDIT. 3 ID: A Physical Science Formative Motion Answer Section MULTIPLE CHOICE 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: ANS: A C D C A D A A A C B B B B D C C PTS: 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 1 DIF: DIF: DIF: DIF: DIF: DIF: DIF: DIF: DIF: DIF: DIF: B B B B B B B B B B B PROBLEM 18. ANS: s = d/t = 10 km/40 min = 0.25 km/min PTS: 1 DIF: A OBJ: 19. ANS: vf – vi/t = (96 m/s – 32 m/s)/ 8.0 s = 8.0 m/s2 2/1 PTS: 1 20. ANS: 152.4 cm 6/2 PTS: DIF: A OBJ: 1 21. ANS: 945 m/s PTS: 1 1 OBJ: OBJ: OBJ: OBJ: OBJ: OBJ: OBJ: OBJ: OBJ: OBJ: OBJ: 1/1 1/1 1/1 1/1 2/1 2/1 3/1 2/1 6/2 6/2 8/3 ID: A 22. ANS: 9.7 meters per second PTS: 1 2