Chapter 3 review

    Standardized test practice
    1. A ball is +5 m from the origin and moves −7 m. What is the ball’s position?
      1. −2 m
      2. 12 m
      3. 7 m
      4. 2 m

    2. If Graham walks 5 m to the right over 6 s and then 3 m back to the left over the next 4 s, then what is his average velocity over the whole process?
      1. 0.2 m/s
      2. 0.33 m/s
      3. 0.1 m/s
      4. 0.8 m/s

      3. Velocity versus time graph for part of a warm-up run
    3. The figure shows a velocity versus time graph for a portion of Frank’s warm-up run. What is Frank’s total displacement?
      1. 45 m
      2. −9 m
      3. −45 m
      4. 9 m

    4. What does the slope of a position versus time graph represent?
      1. Acceleration
      2. Time
      3. Displacement
      4. Velocity

      5. Which plot has the <i>x</i> and <i>y</i> coordinates swapped from the example?
    5. Which of the three (A, B, or C) points has its x and y coordinates swapped from the example?
      1. Graph A
      2. Graph B
      3. Graph C

      Graph of distance vs. time
    1. Calico is driving to work. Which of the following is a possible explanation of the position versus time graph of her drive?
      1. Halfway to work, she stopped for breakfast. After eating, she realized she was late and sped the rest of the drive.
      2. After going halfway, she had to return home to get something she forgot.
      3. Halfway to work, Calico saw a police officer on the highway and slowed down. She completed her drive without incident.
      4. Halfway to work, Calico was pulled over for speeding. After being issued a ticket, she drove the speed limit the rest of the way.

    2. An ant starts at −5 m and moves 10 m left, 25 m right, 30 m left, and 5 m right. If the positive x-axis is to the right, what is the final position and total displacement of the ant?
      1. position: −15 m; displacement: 70 m
      2. position: 5 m; displacement: 10 m
      3. position: 5 m; displacement: −70 m
      4. position: −15 m; displacement: −10 m

    3. Anand gets into an elevator and travels 50 m straight up in a time of 5 s. He then travels in the opposite direction, straight down, for 70 m in a time of 6 s. What is his average speed and velocity, respectively, over the 11 s period?
      1. 10.9 m/s, 1.82 m/s
      2. 10.9 m/s, −1.82 m/s
      3. 21.8 m/s, 10.9 m/s
      4. −10.9 m/s, 5.2 m/s

    4. Which of the following is not a property of displacement?
      1. Displacement can be negative.
      2. Displacement describes a change in position.
      3. Displacement is equal to the total distance traveled by an object in motion.
      4. Displacement is equal to the final position of an object minus the initial position of the object.

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