a. 1.61 m/s c. 3.22 m/s d. 10.1 m/s b. 5.07 m/s 49. An engineer is planning a road with a turn. If the speed limit is 20 m/s and the centripetal acceleration cannot exceed 8.5 m/s/s, how big must the radius of the turn be? c. 2.4 m d. 170 m a. 47 m b. 3400 m 50. Why should you reduce speed around a turn if the road is icy? because your car will travel in a straight line unless forced to do otherwise a. b. because a minimum amount of centripetal force is required to keep your car moving around the curve. C. because the ice reduces the frictional force between the tires and the road. d. all of the above

a. 1.61 m/s c. 3.22 m/s d. 10.1 m/s b. 5.07 m/s 49. An engineer is planning a road with a turn. If the speed limit is 20 m/s and the centripetal acceleration cannot exceed 8.5 m/s/s, how big must the radius of the turn be? c. 2.4 m d. 170 m a. 47 m b. 3400 m 50. Why should you reduce speed around a turn if the road is icy? because your car will travel in a straight line unless forced to do otherwise a. b. because a minimum amount of centripetal force is required to keep your car moving around the curve. C. because the ice reduces the frictional force between the tires and the road. d. all of the above

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter2: Kinematics

Section: Chapter Questions

Problem 5PE: (a) Calculate Earth's average speed relative to the Sun. (b) What is its average velocity over a...

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