Please do question 7,8, and 9 the others are all correct. A car was driving around a horizontal circular track at a constant speed of 16 m/s. Thediagram above shows the view from above. The track has a radius of 60 meters.1) At one time the car was driving to the left, shown by the velocity vector v1 above.After driving halfway around the track, the car was moving to the right, shown bythe vector v2 above. What was the magnitude of the change in velocity between thesetwo times?32m/s Submit2) What was the time interval between the two points indicated in the diagram above(when the car was at opposite sides of the circular track)? [Note: the car movedonly one half of a circumference in that time.]11.8Submit3) What was the magnitude of the average acceleration of the car between the twotimes shown in the diagram above?2.71m/s submit4) Velocities at two other times...The diagram above shows the velocity vectors for the car at two other times,separated by an angle theta. (In the original diagram, theta was equal to pi or 180degrees. In this diagram, theta is less than that.)The speed of the car (16 m/s) and the radius of the circle (60 m) are the same asabove.What is the magnitude of the change in velocity if theta = 120 degrees?27.72m/s Submit+5) What was the time interval between the times when the car was at the two pointsseparated by 120 degrees?7.9Submit+6) What was the avearage acceleration of the car between the two points that areseparated by 120 degrees?3.5m/s2Submit 7) Now consider the same situation (the speed of the car and the radius of the circleare the same) but we are considering two points separated by 60 degrees. What wasthe magnitude of the average acceleration of the car between these two points?m/s?Submit8) One more time... Consider the same situation (the speed of the car and the radius ofthe circle are the same) but we are considering two points separated by 30 degrees.What was the magnitude of the average acceleration of the car between these twopoints?Submit9) What is the magnitude of the instantaneous acceleration of the car? (What is theinstantaneous accleration of an object in uniform circular motion with this speed ona circular trajectory of this radius?)Submit

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7) Now consider the same situation (the speed of the car and the radius of the circle are the same) but we are considering two points separated by 60 degrees. What was the magnitude of the average acceleration of the car between these two points? m/s2 Submit

7) Now consider the same situation (the speed of the car and the radius of the circle are the same) but we are considering two points separated by 60 degrees. What was the magnitude of the average acceleration of the car between these two points? m/s2 Submit

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter2: Vectors

Section: Chapter Questions

Problem 71AP: You fly 32.0 km in a straight line in still air in the direction 35.0 south of west. (a) Find the...

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