Week 5 Fall 2019 Two person race with acceleration and deceleration 14 of 15 IReview | Constants Mary and Sally are in a foot race (see figure (Figure 1)). When Mary is 22 m from the finish line, she has a speed of 4.0 m/s and is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sally thinks she has an easy win and so, during the remaining portion of the race, decelerates at a constant rate of 0.44 m/s2 to the finish line. Part A What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by- side with Sally? Express your answer using two significant figures. View Available Hint(s) ανα ΑΣφ VA D m/s2 а 3 a = Figure 1 of 1 Submit Finish Mary Sally Provide Feedback Next 5.0 m/s 4.0 m/s 5.0 m 22 m

Week 5 Fall 2019 Two person race with acceleration and deceleration 14 of 15 IReview | Constants Mary and Sally are in a foot race (see figure (Figure 1)). When Mary is 22 m from the finish line, she has a speed of 4.0 m/s and is 5.0 m behind Sally, who has a speed of 5.0 m/s. Sally thinks she has an easy win and so, during the remaining portion of the race, decelerates at a constant rate of 0.44 m/s2 to the finish line. Part A What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by- side with Sally? Express your answer using two significant figures. View Available Hint(s) ανα ΑΣφ VA D m/s2 а 3 a = Figure 1 of 1 Submit Finish Mary Sally Provide Feedback Next 5.0 m/s 4.0 m/s 5.0 m 22 m

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter3: Motion Along A Straight Line

Section: Chapter Questions

Problem 91AP: A motorcycle that is slowing down uniformly covers 2.0 successive km in 80 s and 120 s,...

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