COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 2, Problem 15QAP
To determine
Whether there any consistent reason why "up" can't be labeled as "negative" or "left" can't be "positive" and why many physics professors and textbooks recommend choosing up and right as the positive directions in a description of motion
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
I have no idea to how to start to this question: Wags (a dog) decides to go on a journey. He begins his journey by traveling 58 meters in a direction directly south. He then runs 100.0 meters in a direction 30◦north of west. During the last leg of his journey, he follows a scent for 59 meters in a direction 30◦east of north. What distance does Wags end up from his initial startingpoint?
A group of bird watchers sights a bird 120 feet due west of their position. The bird is flying due south at a rate of 400 feet per minute.
a) sketch a labeled picture that represents this situation. Use s for the distance ( in feet) that the bird has flown, and d for the distance between the bird and the bird watchers after t minutes( where t>0)
b) Express d as a function of s
c) Express s as a function of t
d) Find d of s What does it represent
d of s =
it represents__________________________________________________________________________________________________________________________________________________
Question 4:
An object is moving in the x-y plane according to the following formulas:
x = 25t and y = 14t²+9, where x and y are in meters and t is in seconds.
a) Write a vector expression for the position as a function of time, using the unit vectors î and j.
b) Work out the expressions for the velocity vector v as a function of time and the acceleration vector a
as a function of time
c) Find for the position, the velocity, and the acceleration of the object at t = 3.00 s in unit vector
format
Chapter 2 Solutions
COLLEGE PHYSICS
Ch. 2 - Prob. 1QAPCh. 2 - Prob. 2QAPCh. 2 - Prob. 3QAPCh. 2 - Prob. 4QAPCh. 2 - Prob. 5QAPCh. 2 - Prob. 6QAPCh. 2 - Prob. 7QAPCh. 2 - Prob. 8QAPCh. 2 - Prob. 9QAPCh. 2 - Prob. 10QAP
Ch. 2 - Prob. 11QAPCh. 2 - Prob. 12QAPCh. 2 - Prob. 13QAPCh. 2 - Prob. 14QAPCh. 2 - Prob. 15QAPCh. 2 - Prob. 16QAPCh. 2 - Prob. 17QAPCh. 2 - Prob. 18QAPCh. 2 - Prob. 19QAPCh. 2 - Prob. 20QAPCh. 2 - Prob. 21QAPCh. 2 - Prob. 22QAPCh. 2 - Prob. 23QAPCh. 2 - Prob. 24QAPCh. 2 - Prob. 25QAPCh. 2 - Prob. 26QAPCh. 2 - Prob. 27QAPCh. 2 - Prob. 28QAPCh. 2 - Prob. 29QAPCh. 2 - Prob. 30QAPCh. 2 - Prob. 31QAPCh. 2 - Prob. 32QAPCh. 2 - Prob. 33QAPCh. 2 - Prob. 34QAPCh. 2 - Prob. 35QAPCh. 2 - Prob. 36QAPCh. 2 - Prob. 37QAPCh. 2 - Prob. 38QAPCh. 2 - Prob. 39QAPCh. 2 - Prob. 40QAPCh. 2 - Prob. 41QAPCh. 2 - Prob. 42QAPCh. 2 - Prob. 43QAPCh. 2 - Prob. 44QAPCh. 2 - Prob. 45QAPCh. 2 - Prob. 46QAPCh. 2 - Prob. 47QAPCh. 2 - Prob. 48QAPCh. 2 - Prob. 49QAPCh. 2 - Prob. 50QAPCh. 2 - Prob. 51QAPCh. 2 - Prob. 52QAPCh. 2 - Prob. 53QAPCh. 2 - Prob. 54QAPCh. 2 - Prob. 55QAPCh. 2 - Prob. 56QAPCh. 2 - Prob. 57QAPCh. 2 - Prob. 58QAPCh. 2 - Prob. 59QAPCh. 2 - Prob. 60QAPCh. 2 - Prob. 61QAPCh. 2 - Prob. 62QAPCh. 2 - Prob. 63QAPCh. 2 - Prob. 64QAPCh. 2 - Prob. 65QAPCh. 2 - Prob. 66QAPCh. 2 - Prob. 67QAPCh. 2 - Prob. 68QAPCh. 2 - Prob. 69QAPCh. 2 - Prob. 70QAPCh. 2 - Prob. 71QAPCh. 2 - Prob. 72QAPCh. 2 - Prob. 73QAPCh. 2 - Prob. 74QAPCh. 2 - Prob. 75QAPCh. 2 - Prob. 76QAPCh. 2 - Prob. 77QAPCh. 2 - Prob. 78QAPCh. 2 - Prob. 79QAPCh. 2 - Prob. 80QAPCh. 2 - Prob. 81QAPCh. 2 - Prob. 82QAP
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 woman enters a store and walks north a distance of 150 m and then turns East by 150 degrees before walking another 50 m. What is the woman's displacement from when she first entered the store?arrow_forwardA player on a soccer field walks 100 meters to the East, turns North and walks 150 meters, turns West and Walks 100 meters, and finally turns south and ONLY WALKS 100 meters. What is the TOTAL DISTANCE TRAVELED and what is the TOTAL DISPLACEMENT? Total Distance is 200 meters & the Total Displacement is 450 meters east. Total Distance is 350 meters & the Total Displacement is 74 meters. Total Distance is 25 meters & the Total Displacement is 100 meters to the east. Total Distance is 450 meters to the west & the Total Displacement is 50 meters to the NORTH. None of the above.arrow_forwardCould I have help with this average speed and velocity problem. I already know the answers"average velocity = 2.7 m/s due east, average speed = 8.0 m/s" but I need a detailed explanantion on how and why because I am not understanding and getting the same answersarrow_forward
- The F-35A, one of the U.S. Air Force's latest fifth-generation fighter was taken 160 km away from the terminal with a speed of 30. km/h and released. The F-35A returned back to the terminal after 4 days. If we place the origin at the terminal and extend the +x-axis to the release point. With that, what is the distance traveled by the F-35A for the entire trip, the F-35A’s average speed in m/s for the entire trip, the F-35A’s average velocity in m/s for the return flight, and the F-35A’s average velocity in m/s for the entire trip?arrow_forward(a) What are the coordinates of the initial position of the stone? x0 = m y0 = m (b) What are the components of the initial velocity? v0x = m/s v0y = m/s (c) Write the equations for the x- and y-components of the velocity of the stone with time. (Use the following as necessary: t. Let the variable t be measured in seconds. Do not include units in your answer.) vx = vy =arrow_forwardA sports car driver turned his car 15.0 km [E 30.0° N], and then turned again 30.0 km [W 45.0° N] to get back on track. If the diversion lasted a total of 2.00 minutes, what was the average velocity of the car, in m/s? Include diagrams to help you solve the question.arrow_forward
- An object is moving with an initial velocity of 5.8 i m/s and a final velocity 13.8 i m/s. The time taken for acceleration is 2.2 seconds. Calculate the acceleration in m/s2 to 2 sf. In your answer, you do not enter the i unit vector, but you do need to enter negative signs, if appropriate. e.g. if your answer is a = -5.4 i m/s,2 you would enter -5.4arrow_forwardKevin flies (in his private jet) from Los Angeles (LA) to San Francisco (SF), a distance of 450 miles, in 3 hours. He flies back in 2-7/19 hours. If the wind is blowing from the north at a steady rate during both flights, find the velocity of the wind.Answer=20mpharrow_forwardTwo trains, one traveling at 72.0 km/h and the other at 144 km/h, are headed toward one another along a straight, level track. When they are 1.100x103 m apart, each engineer sees the other’s train and applies the brakes. This causes each train to have an acceleration against the train’s direction of motion with the magnitude of 1.00 m/s2.. a) Calculate the distance required for each train to come to a complete stop and based on this result conclude whether there will be a collision? b) Calculate the time required for each train to come to a stop.arrow_forward
- You are driving along the highway at a steady speed of 90 km/h when another car decides to pass you. At the moment when the front of his car is exactly even with the front of your car, and you turn your head to smile at him, do the two cars have equal velocities? Draw a position graph to describe the motion of two cars.arrow_forwardYou take your dog on a walk to a nearby park. On the way, yourdog takes many short side trips to chase squirrels, examine fire hydrants, and so on. When you arrive at the park, do you and yourdog have the same displacement from home? Have you and yourdog traveled the same distance? Explainarrow_forwardYou are kidnapped by political-science majors (who are upset because you told them political science is not a real science). Although blindfolded, you can tell the speed of their car (by the whine of the engine), the time of travel (by mentally counting off seconds), and the direction of travel (by turns along the rectangular street system). From these clues, you know that you are taken along the following course: 50 km/h for 2.0 min, turn 90° to the right, 20 km/h for 4.0 min, turn 90° to the right, 20 km/h for 60 s, turn 90° to the left, 50 km/h for 60 s, turn 90° to the right, 20 km/h for 2.0 min, turn 90° to the left, 50 km/h for 30 s. At that point, (a) how far are you from your starting point, and (b) in what direction relative to your initial direction of travel are you?arrow_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
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