Chapter 4: Kinematics in Two Dimensions

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Pages: 80 - 109

Book edition 4th

Author(s) Randall D. Knight

Pages 1240 pages

ISBN 9780133942651

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108 Questions for Chapter 4: Kinematics in Two Dimensions

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

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

Found on Page 104
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
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
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
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
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
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
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
13. FIGURE Q4.13 shows three points on a steadily rotatin

Found on Page 105

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Chapter 4: Kinematics in Two Dimensions

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

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108 Questions for Chapter 4: Kinematics in Two Dimensions

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