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Chapter 4: Kinematics in Two Dimensions

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Pages: 80 - 109

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108 Questions for Chapter 4: Kinematics in Two Dimensions

  1. Problems 1 and 2 show a partial motion diagram. For each:

    Found on Page 105
  2. a. At this instant, is the particle in FIGURE Q4.1 speeding up, slowing down, or traveling at constant speed?

    Found on Page 104
  3. 10. You have a remote-controlled car that has been programmed to have velocity , v→=−3ti^+2t2j^m/swhere t is in s. At ,t=0s the car is at r→0=(3.0i^+2.0j^)m. What are the car's (a) position vector and (b) acceleration vector at t=2.0s

    Found on Page 106
  4. Zack is driving past his house in FIGURE Q4.10. He wants to toss his physics book out the window and have it land in his driveway. If he lets go of the book exactly as he passes the end of the driveway, should he direct his throw outward and toward the front of the car (throw 1), straight outward (throw 2), or outward and toward the back of the car (throw 3)? Explain.

    Found on Page 104
  5. 11. II A ball thrown horizontally at25m/s travels a horizontal distance of 50mbefore hitting the ground. From what height was the ball thr

    Found on Page 106
  6. 11. In FIGURE Q4.11, Yvette and Zack are driving down the freeway side by side with their windows down. Zack wants to toss his physics book out the window and have it land in Yvette's front seat. Ignoring air resistance, should he direct his throw outward and toward the front of the car (throw 1), straight outward (throw 2), or outward and toward the back of the car (throw 3 )? Explain.

    Found on Page 104
  7. 12. A physics student on Planet Exidor throws a ball, and it follows the parabolic trajectory shown in FIGURE EX4.12. The ball's position is shown at 1s intervals untilt=3s. At t=1s, the ball's velocity is localid="1647396327258" v→=(2.0i^+2.0j^)m/

    Found on Page 106
  8. 12. In uniform circular motion, which of the following quantities are constant: speed, instantaneous velocity, the tangential component of velocity, the radial component of acceleration, the tangential component of acceleration? Which of these quantities are zero throughout the motion?

    Found on Page 105
  9. 13. A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. The plane flies 100 m above the glacier at a speed of 150 m/s. How far short of the target should

    Found on Page 106
  10. 13. FIGURE Q4.13 shows three points on a steadily rotatin

    Found on Page 105

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