![College Physics](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
It is common practice in driving to ease one's foot from the gas pedal when driving downhill. Which of the following statements is correct regarding the underlying physical principle that explains why this method of coasting is practical?
Question 7 options:
|
The kinetic energy of the car is converted to gravitational potential energy as the car moves down the hill.
|
|
The wheels are allowed to rotate freely while coasting so braking is more effective.
|
|
The wheels are allowed to rotate freely while coasting so less friction is encountered.
|
|
The gravitational potential energy of the car is converted into kinetic energy as the car moves down the hill.
|
Expert Solution
![Check Mark](/static/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps with 1 images
![Blurred answer](/static/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- 2 Your answer is partially correct. Try again. In the figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.0 kg, block B has a mass of 2.2 kg, and angle e is 27 °. If the blocks are released from rest with the connecting cord taut, what is their total kinetic energy when block B has fallen 21 cm? Number 2.47 Units the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work SHOW HINT LINK TO TEXT LINK TO SAMPLE OBLEM LINK TO SAMPLE PROBLEM LINK TO SAMPLE PROBLEM VIDEO MINI-LECTURE 10:37 PM search ENG 4/4/2021 17 12 1home 3. 4 9. 7. 8. R. T. 00arrow_forward4. The power provided by a force can also be written as P = dW /dt = F · d7/dt = F .ö. A force F = (3i – 2j + 6k)N is applied to an object moving with a velocity i = (2î – 3k) m/s. a. What is the power provided by this force? Does the object speed up or slow down or neither, if this force is the only unbalanced force acting on the object? b. Consider a force that is always perpendicular to the velocity. Does the object speed up or slow down or neither, if this force is the only unbalanced force acting on the object?arrow_forwardplease help with questions 94,95 and 96arrow_forward
- A 4 kg box slides down an incline plane. It has an incline of 1.25664 radians and coefficient of kinetic friction of .5, what’s the final speed of the box if it started at rest and change in height is 6.4 marrow_forwardA 1400 kg car delivers a constant 42 hp to the drive wheels. We assume the car is traveling on a level road and that all frictional forces may be ignored.A) What is the acceleration of this car when its speed is 10 m/s?B) If the speed of the car is doubled, does its acceleration increase, decrease, or stay the same? Explainarrow_forwardA 67.5-kg skier encounters a dip in the snow's surface that has a circular cross section with a radius of curvature of 12.0 m, as shown below. The snow is so slippery it can be considered to be frictionless. If the skier's speed a point A is 9.64 m/s, what is the skier's speed at point B? (enter your answer to three significant figures) possibly useful: K, + U, = K, + U, + AQ K = (1/2)mv2 W = mg Ugrav = mgh r 12 m %3D 1.75 m g = 9.81 m/s? (FJnet = mac = mv/r 9.64 m/s Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B What is the normal force exerted on the skier at point B? (enter your answer to three significant figures) Submit Request Answerarrow_forward
- Consider four "special positions" of the marble: (A) - the marble begins to fall (B) the cord begins to stretch (C) - the equilibrium position (D) the marble comes to a momentary stop as shown below. Assume that the zero level of the gravitational potential energy of the system "marble-Earth" is at the level of the table. 31 The marble reaches its maximum speed: at position B A Obetween positions A and B . Б at position C X C D Obetween positions B and C Oat position D Obetween positions C and Darrow_forwardA recently patented pile driver pounds piles into the ground by launching 15 kg bowling balls from a spring loaded gun, up around a frictionless loop-de-loop of radius r= 8 m, and down onto the pile. When the spring is compressed by As = 2 m, the bowling balls have a speed of 20 m/s at the top of the loop, as shown. (You may v = 20 m/s r=8 m assume g = 10 m/s².) k ? As = 2 m Find the spring constant of the gun. pile A) Zero B) 100 N/m C) 2700 N/m D) 150 N/m E) 1300 N/m O A O B O D O Earrow_forward1. Choose the correct answer from the option list below to answer the following parts. a) A ball is rolling across the floor at a constant velocity. What is the value of the change in its kinetic energy, ΔEk? b) A ball starts rolling down a ramp. What is the value of the change in its kinetic energy, ΔEk? c) A ball slows down as it rolls up a hill. What is the value of the change in its kinetic energy, ΔEk? i) Zero ii) Positive iii) Negativearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305952300/9781305952300_smallCoverImage.gif)
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9780133969290/9780133969290_smallCoverImage.gif)
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
![Text book image](https://www.bartleby.com/isbn_cover_images/9781107189638/9781107189638_smallCoverImage.jpg)
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337553278/9781337553278_smallCoverImage.gif)
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9780321820464/9780321820464_smallCoverImage.gif)
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
![Text book image](https://www.bartleby.com/isbn_cover_images/9780134609034/9780134609034_smallCoverImage.gif)
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON