Question 18. A train slows down as it rounds a sharp horizontal turn slowing from 90 km/h to 50 km/h in the 15 s that it takes to round the bend. The radius of the curve is 150 m. What is the magnitude of the total acceleration at the moment the train speed reaches 50 km/h? A. a= 2.56 m/s² B. a= 1.48 m/s² C. a= 0.23 m/s² D. a= 3.76 m/s²

Question 18. A train slows down as it rounds a sharp horizontal turn slowing from 90 km/h to 50 km/h in the 15 s that it takes to round the bend. The radius of the curve is 150 m. What is the magnitude of the total acceleration at the moment the train speed reaches 50 km/h? A. a= 2.56 m/s² B. a= 1.48 m/s² C. a= 0.23 m/s² D. a= 3.76 m/s²

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 12OQ

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