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(Ill) Mary and Sally are in a foot race (Fig. 2-43).

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 4th Edition | ISBN: 9780133942651 | Authors: Randall D. Knight (Professor Emeritus) ISBN: 9780133942651 188

Solution for problem 47 Chapter 2

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 4th Edition

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 4th Edition | ISBN: 9780133942651 | Authors: Randall D. Knight (Professor Emeritus)

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 4th Edition

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Problem 47

(Ill) Mary and Sally are in a foot race (Fig. 2-43). WhenMary is 22 m from the finish line, she has a speed of 4.0 m/sand is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sallythinks she has an easy win and so, during the remainingportion of the race, decelerates at a constant rate of0.50 m/s2 to the finish line. What constant acceleration doesMary now need during the remaining portion of the race, ifshe wishes to cross the finish line side-by-side with Sally?

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Chapter 10 – Rotation of a Rigid Object About a Fixed Axis 10.1 – Angular Position, Velocity, and Acceleration kinematics are similar to translational motion - instead of x or y for position, we use θ for angular position s=rθ arc length s is related to angular position: π *The unit used for θ is the radian: θ rad)= θ (deg) 180° θf−θ i ∆θ - average angular speed: ω avg t −t = ∆t f i ∆θ dθ - instantaneous angu

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Chapter 2, Problem 47 is Solved
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Textbook: Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Edition: 4
Author: Randall D. Knight (Professor Emeritus)
ISBN: 9780133942651

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(Ill) Mary and Sally are in a foot race (Fig. 2-43).