Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 2, Problem 12E
The velocity of a car decreases from 28 m/s to 20 m/s in a time of 4 seconds. What is the average acceleration of the car in this process?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A train starts from rest and accelerates uniformly, until it has traveled 2.5 km and acquired a velocity of 24 m/s. The train then moves at a constant velocity of 24 m/s for 400 s. The train then slows down uniformly at 0.065 m/s2, until it is brought to a halt. What is the total time traveled by the train?
A rocket-powered sled moves along a track, eventually reaching a top speed of 261 m/s to the west. It then begins to slow down, reaching a complete stop after slowing down for 3.37 s. What was the sled s average acceleration and velocity during the slowdown phase?
An object has an initial velocity of 2.0m/s. It accelerates at a rate of 3.3m/s2 for 5.0 s. What is the final velocity of the object?
Chapter 2 Solutions
Physics of Everyday Phenomena
Ch. 2 - Prob. 1CQCh. 2 - Suppose we choose inches as our basic unit of...Ch. 2 - What units would have an appropriate size for...Ch. 2 - A tortoise and a hare cover the same distance in a...Ch. 2 - A driver states that she was doing 80 when stopped...Ch. 2 - Does the speedometer on a car measure average...Ch. 2 - Is the average speed over several minutes more...Ch. 2 - The highway patrol sometimes uses radar guns to...Ch. 2 - Is the term vehicle density (as used in everyday...Ch. 2 - Prob. 10CQ
Ch. 2 - At the front end of a traffic jam, is the vehicle...Ch. 2 - A hockey puck is sliding on frictionless ice. It...Ch. 2 - A ball attached to a string is whirled in a...Ch. 2 - Prob. 14CQCh. 2 - A dropped ball gains speed as it falls. Can the...Ch. 2 - A driver of a car steps on the brakes, causing the...Ch. 2 - At a given instant in time, two cars are traveling...Ch. 2 - A car just starting up from a stop sign has zero...Ch. 2 - A car traveling with constant speed rounds a curve...Ch. 2 - A racing sports car traveling with a constant...Ch. 2 - In the graph shown here, velocity is plotted as a...Ch. 2 - A car moves along a straight line so that its...Ch. 2 - For the car whose distance is plotted against time...Ch. 2 - A car moves along a straight section of road so...Ch. 2 - For the car whose velocity is plotted in question...Ch. 2 - Look again at the velocity-versus-time graph for...Ch. 2 - Suppose the acceleration of a car increases with...Ch. 2 - When a car accelerates uniformly from rest, which...Ch. 2 - The velocity-versus-time graph of an object curves...Ch. 2 - For a uniformly accelerated car, is the average...Ch. 2 - A car traveling in the forward direction...Ch. 2 - A car starts from rest, accelerates uniformly for...Ch. 2 - Suppose that two runners run a 100-meter dash, but...Ch. 2 - Sketch a graph showing velocity-versus-time curves...Ch. 2 - A physics instructor walks with increasing speed...Ch. 2 - Prob. 36CQCh. 2 - Return to example box 2.4, but this time assume...Ch. 2 - A traveler covers a distance of 413 miles in a...Ch. 2 - A walker covers a distance of 2.4 km in a time of...Ch. 2 - Grass clippings are found to have an average...Ch. 2 - A driver drives for 2.5 hours at an average speed...Ch. 2 - A woman walks a distance of 504 m, with an average...Ch. 2 - A person in a hurry averages 70 MPH on a trip...Ch. 2 - A hiker walks with an average speed of 1.3 m/s....Ch. 2 - Prob. 8ECh. 2 - A car travels with an average speed of 65 MPH....Ch. 2 - Starting from rest and moving in a straight line,...Ch. 2 - Starting from rest, a car accelerates at a rate of...Ch. 2 - The velocity of a car decreases from 28 m/s to 20...Ch. 2 - A car traveling with an initial velocity of 16 m/s...Ch. 2 - A runner traveling with an initial velocity of 1.1...Ch. 2 - A car moving with an initial velocity of 32 m/s...Ch. 2 - A runner moving with an initial velocity of 4.0...Ch. 2 - If a world-class sprinter ran a distance of 100...Ch. 2 - Starting from rest, a car accelerates at a...Ch. 2 - A railroad engine moves forward along a straight...Ch. 2 - The velocity of a car increases with time, as...Ch. 2 - A car traveling due west on a straight road...Ch. 2 - A car traveling in a straight line with an initial...Ch. 2 - Just as car A is starting up, it is passed by car...
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
- A rocket-powered sled moves along the track, eventually reaching a top speed of 230 m/s to the west. It then begins to slow down, reaching a complete stop after slowing down for 4.42 s. What was the sled s average acceleration and velocity during the slow down phase? arrow_forwardA car is traveling along a straight road at a velocity of +38.8 m/s when its engine cuts out. For the next 2.01 seconds, the car slows down, and its average acceleration is . For the next 6.36 seconds, the car slows down further, and its average acceleration is . The velocity of the car at the end of the 8.37 second period is +26.6 m/s. The ratio of the average acceleration values is = 1.45. a. Find the velocity of the car at the end of the initial 2.01 second interval.arrow_forwardA jeepney starts from rest and moves with an acceleration of 0.5 m/s² until it reaches the velocity 5 m/s, runs at this speed for a time, then applies the break to decelerate at 1.0 m/s² until it stops in 30 seconds. What is the total displacement of the jeepney?arrow_forward
- A drag racer crosses the finish line, and the driver deploys a parachute and applies the breaks to slow down. The driver begins slowing down at 6 seconds and the velocity becomes 28m/s. When the time changes to 12 second, the velocity has been reduced to 12.5 m/s. What is the average acceleration of the dragster?arrow_forwardThe car then slows to 63 ft/s (43 mi/h) in 3.5 s. What is the average acceleration for this time period?arrow_forwardA driver applies the brakes on his car reducing its speed from 31.0 m/s to 11.0 m/s in a time 5.0 secs while traveling a distance of 121 m. What is that magnitude of the car's average acceleration during the 5.0 sec period?arrow_forward
- A car is traveling along a straight road at a velocity of +27.4 m/s when its engine cuts out. For the next 2.24 seconds, the car slows down, and its average acceleration is . For the next 3.56 seconds, the car slows down further, and its average acceleration is . The velocity of the car at the end of the 5.80-second period is +14.5 m/s. The ratio of the average acceleration values is = 1.91. Find the velocity of the car at the end of the initial 2.24-second interval.arrow_forwardA sports car accelerates from rest to 97km/h in 4.2 s. What is its average acceleration in m/s2? Express your answer using two significant figures.arrow_forwardAn automobile is travelling down a straight path. The initial speed of the automobile is 100 ft/s. The driver saw a speed bump far away and hit the brakes so that the automobile it slows down to 30 ft/s in 17 seconds. At what rate is the car decelerating?arrow_forward
- An object on a number line moved from x = 12 m to x = 124 m andmoved back to x = 98 m. The time interval for all the motion was 10 S.What was the average velocity of the object?arrow_forwardYou are driving down the highway late one night at 20 m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s , and the maximum deceleration of your car is 10 m/s2. How much distance is between you and the deer when you come to a stop? Express your answer in meters.arrow_forwardThe velocity as a function of time for a world-class track sprinter in a 100 m race is shown in the figure. The sprinter accelerates for the first 4.0 seconds, and then runs at a constant velocity until the end of the race. What is his average velocity for the first 4.0 s, in meters per second?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction 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 Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON
Speed Distance Time | Forces & Motion | Physics | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=EGqpLug-sDk;License: Standard YouTube License, CC-BY