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8) One more time... 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 30 degrees. What was the magnitude of the average acceleration of the car between these two points? m/s Submit. 9) What is the magnitude of the instantaneous acceleration of the car? (What is the instantaneous accleration of an object in uniform circular motion with this speed on a circular trajectory of this radius?) Submit

8) One more time... 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 30 degrees. What was the magnitude of the average acceleration of the car between these two points? m/s Submit. 9) What is the magnitude of the instantaneous acceleration of the car? (What is the instantaneous accleration of an object in uniform circular motion with this speed on a circular trajectory of this radius?) Submit

College Physics
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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Please do questions 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. The diagram 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 by the vector v2 above. What was the magnitude of the change in velocity between these two times? 32 m/s Submit 2) 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 moved only one half of a circumference in that time.] 11.8 Submit 3) What was the magnitude of the average acceleration of the car between the two times shown in the diagram above? 2.71 m/s submit 4) 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 180 degrees. 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 as above. What is the magnitude of the change in velocity if theta = 120 degrees? 27.72 m/s Submit + 5) What was the time interval between the times when the car was at the two points separated by 120 degrees? 7.9 Submit + 6) What was the avearage acceleration of the car between the two points that are separated by 120 degrees? 3.5 m/s2 Submit
Transcribed Image Text:A car was driving around a horizontal circular track at a constant speed of 16 m/s. The diagram 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 by the vector v2 above. What was the magnitude of the change in velocity between these two times? 32 m/s Submit 2) 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 moved only one half of a circumference in that time.] 11.8 Submit 3) What was the magnitude of the average acceleration of the car between the two times shown in the diagram above? 2.71 m/s submit 4) 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 180 degrees. 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 as above. What is the magnitude of the change in velocity if theta = 120 degrees? 27.72 m/s Submit + 5) What was the time interval between the times when the car was at the two points separated by 120 degrees? 7.9 Submit + 6) What was the avearage acceleration of the car between the two points that are separated by 120 degrees? 3.5 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? 4.07 m/s 2 Submit 8) One more time... 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 30 degrees. What was the magnitude of the average acceleration of the car between these two points? m/s2 Submit 9) What is the magnitude of the instantaneous acceleration of the car? (What is the instantaneous accleration of an object in uniform circular motion with this speed on a circular trajectory of this radius?) Submit
Transcribed Image Text: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? 4.07 m/s 2 Submit 8) One more time... 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 30 degrees. What was the magnitude of the average acceleration of the car between these two points? m/s2 Submit 9) What is the magnitude of the instantaneous acceleration of the car? (What is the instantaneous accleration of an object in uniform circular motion with this speed on a circular trajectory of this radius?) Submit
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