College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Learning Goal: A car is traveling at a constant velocity of magnitude vo when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is d. A time treact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied?
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Transcribed Image Text:Learning Goal: A car is traveling at a constant velocity of magnitude vo when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is d. A time treact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied?
Find the magnitude of ax, the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, treact, and vo. ► View Available Hint(s) |ax| || VE ΑΣΦ ?
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Transcribed Image Text:Find the magnitude of ax, the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, treact, and vo. ► View Available Hint(s) |ax| || VE ΑΣΦ ?
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Learning Goal: A car is traveling at a constant velocity of magnitude vo when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is d. A time treact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied? Part C Find the magnitude of ax, the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, treact, and vo. View Available Hint(s) |ax| = Submit Review (vo) ² 2(d-votreact) Part D Previous Answers Correct In Part C, you found that the magnitude of the car's acceleration after the brakes are applied is |ax| v²/ 2(d-votreact) Based on this expression, what happens to |ax| if treact increases and all the other variables remain constant? = |ax| decreases because it is inversely proportional to a linear function of treact that increases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that increases as treact increases. O ax increases because it is a linear function of treact. O ax decreases because it is inversely proportional to a linear function of treact that decreases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that decreases as treact increases.
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Transcribed Image Text:Learning Goal: A car is traveling at a constant velocity of magnitude vo when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is d. A time treact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied? Part C Find the magnitude of ax, the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, treact, and vo. View Available Hint(s) |ax| = Submit Review (vo) ² 2(d-votreact) Part D Previous Answers Correct In Part C, you found that the magnitude of the car's acceleration after the brakes are applied is |ax| v²/ 2(d-votreact) Based on this expression, what happens to |ax| if treact increases and all the other variables remain constant? = |ax| decreases because it is inversely proportional to a linear function of treact that increases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that increases as treact increases. O ax increases because it is a linear function of treact. O ax decreases because it is inversely proportional to a linear function of treact that decreases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that decreases as treact increases.
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Learning Goal: A car is traveling at a constant velocity of magnitude vo when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is d. A time treact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied? Part C Find the magnitude of ax, the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, treact, and vo. View Available Hint(s) |ax| = Submit Review (vo) ² 2(d-votreact) Part D Previous Answers Correct In Part C, you found that the magnitude of the car's acceleration after the brakes are applied is |ax| v²/ 2(d-votreact) Based on this expression, what happens to |ax| if treact increases and all the other variables remain constant? = |ax| decreases because it is inversely proportional to a linear function of treact that increases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that increases as treact increases. O ax increases because it is a linear function of treact. O ax decreases because it is inversely proportional to a linear function of treact that decreases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that decreases as treact increases.
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Transcribed Image Text:Learning Goal: A car is traveling at a constant velocity of magnitude vo when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is d. A time treact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied? Part C Find the magnitude of ax, the acceleration of the car after the brakes are applied. Express your answer in terms of some or all of the variables d, treact, and vo. View Available Hint(s) |ax| = Submit Review (vo) ² 2(d-votreact) Part D Previous Answers Correct In Part C, you found that the magnitude of the car's acceleration after the brakes are applied is |ax| v²/ 2(d-votreact) Based on this expression, what happens to |ax| if treact increases and all the other variables remain constant? = |ax| decreases because it is inversely proportional to a linear function of treact that increases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that increases as treact increases. O ax increases because it is a linear function of treact. O ax decreases because it is inversely proportional to a linear function of treact that decreases as treact increases. |ax| increases because it is inversely proportional to a linear function of treact that decreases as treact increases.
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