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1-D Mechanics Test Review

1-D Mechanics Test Review. If a dog walks 3m north and then turns around and walks 2 m south. What is true about the distance the dog has walked, and the magnitude of his displacement ?. Distance is 1 m, displacement is 5 m. Distance is 5 m, displacement is 1 m.

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1-D Mechanics Test Review

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  1. 1-D Mechanics Test Review

  2. If a dog walks 3m north and then turns around and walks 2 m south. What is true about the distance the dog has walked, and the magnitude of his displacement? • Distance is 1 m, displacement is 5 m. • Distance is 5 m, displacement is 1 m. • Distance is 5 m, displacement is 0 m. • Distance is 5 m, displacement is 10 m.

  3. If you walk around a circular track with a 10 m diameter once. What is true about the distance you walked and the magnitude of your displacement? • A. Distance is 10m, displacement is 10 m. • B. Distance is 10 m, displacement is 31.4 m. • C. Distance is 31.4 m, displacement is 0 m. • D. Distance is 0 m, displacement is 31.4 m.

  4. If you walk 3 meters north, then turn east and walk 4 meters. What is true about the distance you walked, and the magnitude of your displacement? a. Distance is 7 m, displacement is 1 m. b. Distance is 7 m, displacement is 0 m. c. Distance is 7 m, displacement is 5 m. d. Distance is 5 m, displacement is 7 m.

  5. Which of the following correctly describes the motion depicted on the position-time graph shown at right? Constant velocity Negative acceleration Postive acceleration A and B A and C

  6. Determine the average velocity from the graph. 3 m/s 1/3 m/s -3 m/s -1/3 m/s ¼ m/s

  7. What words or phrases describe the motion of the particle whose position versus time graph was on the previous slide? • The particle is moving at constant velocity. • The particle is moving in the positive direction. • The particle reverses direction between 2 and 3 seconds. • Both a and b are true.

  8. When does the particle reverse its direction? At 1.0 s At 2.0 s At 3.0s At 4.0s It does not reverse its direction

  9. When does the particle have constant velocity? Between 0 and 2.0 s Between 2.0 and 5.0 s Everywhere nowhere

  10. Shown at right is a Velocity versus time graph for an object moving along the x-axis. Assume that the object is passing through x=0 at time t=0. At what time will the object again pass through x=0? • At 2.0 seconds • Between 2.0 and 4.0s • Between 0 and 2 seconds • At 4.0 seconds

  11. A ball is thrown straight upward and returns to the thrower. What can be said about the velocity and acceleration of the ball as the top of its path? • Velocity and acceleration are both zero • Velocity and acceleration are both positive • Velocity and acceleration are both negative • Velocity is momentarily zero, and acceleration is negative • Velocity is momentarily zero, and acceleration is switching from positive to negative

  12. The motion diagram shown below depicts a particle that … . . . . . 0 1 2 3 4 5 6 7 • Is traveling at uniform velocity • Is slowing down • Is accelerating • Is traveling east • None of the above

  13. A ball is thrown upward with an initial velocity of vo. How high will it go? a. vo2/g b. vo2/4g c. vo2/2g d. vo/g2

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