28. An airplane makes a gradual (90° turn while flying at a constant speed of 200 m/s. The processtakes 20.0 seconds to complete. For this turn the magnitude of the average acceleration of theplane is:А.zero2 TirB. 40 m/sC. 20 m/sD. 14 m/sE. 10m/s?2202 ir200ans: D4o00 = 2irr= 63729. An airplane is flying north at 500 km/h. It makes a gradual 180° turn at constant speed,changing its direction of travel from north through east to south. The process takes 40 s. Theaverage acceleration of the plane for this turn (in km/h-s) is:A. 12.5 km/h·s, northB. 12.5 km/h·s, eastC. 12.5 km/h·s, southD. 25 km/h s, northE. 25 km/h s, southans: E

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28. An airplane makes a gradual (90° turn while flying at a constant speed of 200 m/s. The process takes 20.0 seconds to complete. For this turn the magnitude of the average acceleration of the plane is: A. zero a T- 2Tir B. 40 m/s C. 20 m/s D. 14m/s E. 10m/s 20 = 2 Tr 200 ans: D 4o00 = 2ir r= 637

28. An airplane makes a gradual (90° turn while flying at a constant speed of 200 m/s. The process takes 20.0 seconds to complete. For this turn the magnitude of the average acceleration of the plane is: A. zero a T- 2Tir B. 40 m/s C. 20 m/s D. 14m/s E. 10m/s 20 = 2 Tr 200 ans: D 4o00 = 2ir r= 637

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

28. An airplane makes a gradual (90° turn while flying at a constant speed of 200 m/s. The process
takes 20.0 seconds to complete. For this turn the magnitude of the average acceleration of the
plane is:
А.
zero
2 Tir
B. 40 m/s
C. 20 m/s
D. 14 m/s
E. 10m/s?
2
20
2 ir
200
ans: D
4o00 = 2ir
r= 637
29. An airplane is flying north at 500 km/h. It makes a gradual 180° turn at constant speed,
changing its direction of travel from north through east to south. The process takes 40 s. The
average acceleration of the plane for this turn (in km/h-s) is:
A. 12.5 km/h·s, north
B. 12.5 km/h·s, east
C. 12.5 km/h·s, south
D. 25 km/h s, north
E. 25 km/h s, south
ans: E

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