Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 3, Problem 42PCE
Referring to Problem 41, suppose you lake 44 s to complete the 490-m displacement and 73 s to complete the 950-m displacement. (a) What are the magnitude and direction of your average velocity during this 117-second penod of time? (b) What is your average speed during the trip?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Now let’s apply our definition of average velocity to a swimming competition. During one heat of a swim meet, a swimmer performs the crawl stroke in a pool 50.0 mm long, as shown in (Figure 1). She swims a length at racing speed, taking 24.0 ss to cover the length of the pool. She then takes twice that time to swim casually back to her starting point. Find (a) her average velocity for each length and (b) her average velocity for the entire swim.
c) If the swimmer could cross a 15 kmkm channel maintaining the same average velocity as for the first 50 mm in the pool, how long would it take?
A man walks 20.0km South and then 8.00km 35.0oN of W.
a) What is the man’s displacement ? (16.7km, 67o S of W)
b) What is the man’s average speed if the entire trip takes 12.0 hours ? (2.30km/hr)
c) What is the man’s average velocity ? (1.40km/hr, 67o S of W)
The acceleration of a particle is given by a - 2t - 17, where a is in meters per second squared and tis in seconds. Determine the velocity
and displacement as functions of time. The initial displacement at t= 0 is so = -2 m, and the initial velocity is vo = 4 m/s. Once you have
determined the functions of time, answer the questions.
Questions: When t = 5.9 s,
m
i
m/s
m/s?
Chapter 3 Solutions
Physics (5th Edition)
Ch. 3.1 - Is it possible for two vectors to be different...Ch. 3.2 - A vector has the components Ax = 5 m and Ay = 3 m....Ch. 3.3 - Several vectors are shown in Figure 3-16. The red...Ch. 3.4 - Which of the vectors shown in Figure 3-20 has the...Ch. 3.5 - An object moves along the brown path in Figure...Ch. 3.6 - Suppose the speed of the boat is increased in part...Ch. 3 - For the following quantities, indicate which is a...Ch. 3 - Which, if any of the vectors shown in Figure 3-36...Ch. 3 - Given that A+B=0, (a) how does the magnitude of B...Ch. 3 - Can a component of a vector be greater than the...
Ch. 3 - Prob. 5CQCh. 3 - Can a vector with zero magnitude heve one or more...Ch. 3 - Prob. 7CQCh. 3 - Prob. 8CQCh. 3 - Prob. 9CQCh. 3 - Prob. 10CQCh. 3 - Prob. 11CQCh. 3 - Use a sketch to show that two vectors of unequal...Ch. 3 - Rain is falling vertically downward and you are...Ch. 3 - When sailing, the wind feels stronger when you...Ch. 3 - Suppose that each component ot a certain vector is...Ch. 3 - Rank the vectors in Figure 3-37 in order of...Ch. 3 - Rank the vectors in Figure 3-37 in order of...Ch. 3 - Rank the vectors in Figure 3-37 in order of...Ch. 3 - The press box at a baseball park is 44.5 ft above...Ch. 3 - You are driving up a long, inclined road. After...Ch. 3 - A One-Percent Grade A road that rises 1 ft for...Ch. 3 - You walk in a straight line tor 95 m at an angle...Ch. 3 - Find the x and y components of a position vector r...Ch. 3 - A vector has the components Az = 22 m and Ay = 13...Ch. 3 - A vector has the components Az = 36 m and Ay = 43...Ch. 3 - A baseball diamond (Figure 3-38) is a square with...Ch. 3 - A lighthouse that rises 49 ft above the surface of...Ch. 3 - H2O A water molecule is shown schematically in...Ch. 3 - Prob. 15PCECh. 3 - You drive a car 660 ft to the east, then 340 ft to...Ch. 3 - Vector A has a magnitude of 50 units and points in...Ch. 3 - A treasure map directs you to start at a palm tree...Ch. 3 - A whale comes to the surface to breathe and then...Ch. 3 - Consider the vectors A and B shown in Figure 3-42....Ch. 3 - Refer to Figure 3-42 for the following questions...Ch. 3 - A vector A has a magnitude of 40.0 m and points in...Ch. 3 - An air traffic controller observes two airplanes...Ch. 3 - The initial velocity of a car, vi, is 45 km/h in...Ch. 3 - Vector A points in the positive x direction and...Ch. 3 - Vector A points in the negative x direction and...Ch. 3 - Vector A points in the negative y direction and...Ch. 3 - A basketball player runs down the court, following...Ch. 3 - A particle undergoes a displacement r of magnitude...Ch. 3 - A vector has a magnitude of 3.50 m and points in a...Ch. 3 - A vector A has a length of 6.1 m and points in the...Ch. 3 - The vector 5 2 A has a magnitude of 34 m and...Ch. 3 - Find the direction and magnitude of the vectors....Ch. 3 - Find the direction and magnitude of the vectors....Ch. 3 - For the vectors given in Problem 34, express (a)...Ch. 3 - Express each of the vectors in Figure 3-44 in unit...Ch. 3 - Referring to the vectors in Figure 3-44, express...Ch. 3 - The blue curves shown in Figure 3-45 display the...Ch. 3 - What are the direction and magnitude of your total...Ch. 3 - Predict/Calculate Moving the Knight Two of the...Ch. 3 - To visit your favorite ice cream shop, you must...Ch. 3 - Referring to Problem 41, suppose you lake 44 s to...Ch. 3 - You drive a car 1500 ft to the east, then 2500 ft...Ch. 3 - Predict/Calculate A jogger runs with a speed of...Ch. 3 - You throw a ball upward with an initial speed of...Ch. 3 - Consider a skateboarder who starts from rest at...Ch. 3 - In a soccer game a midfielder kicks the ball from...Ch. 3 - The accompanying photo shows a KC-10A Extender...Ch. 3 - As an airplane taxied on the runway with a speed...Ch. 3 - Referring to part (a) of Example 3-11, find the...Ch. 3 - A police car travels at 38.0 m/s due east while in...Ch. 3 - Consider the river crossing problem in Example...Ch. 3 - As you hurry to catch your flight at the local...Ch. 3 - In Problem 53, how much lime would it take you to...Ch. 3 - Predict/Calculate The pilot of an airplane wishes...Ch. 3 - A passenger walks from one side of a ferry to the...Ch. 3 - You are riding on a Jet Ski at an angle of 35...Ch. 3 - Predict/Calculate In Problem 57, suppose the Jet...Ch. 3 - Predict/Calculate Two people take identical Jet...Ch. 3 - CE Predict/Explain Consider the vectors A=(1.2m)x...Ch. 3 - CE Predict/Explain Two vectors are defined as...Ch. 3 - To be compliant with regulations the inclination...Ch. 3 - Find the direction and magnitude of the vector...Ch. 3 - Prob. 64GPCh. 3 - Prob. 65GPCh. 3 - Prob. 66GPCh. 3 - You pilot an airplane with the intent to fly 392...Ch. 3 - Find the x, y, and z components of the vector A...Ch. 3 - Observer 1 rides in a car and drops a ball from...Ch. 3 - A person riding in a subway train drops a ball...Ch. 3 - A football is thrown horizontally with an initial...Ch. 3 - As a function of time, the velocity of the...Ch. 3 - Two airplanes taxi as they approach the terminal....Ch. 3 - A shopper at the supermarket follows the path...Ch. 3 - BIO A food particle from your breakfast takes a...Ch. 3 - Initially a particle is moving at 4.10 m/s at an...Ch. 3 - A passenger on a stopped bus notices that rain is...Ch. 3 - Predict/Calculate Suppose we orient the x axis of...Ch. 3 - Predict/Calculate The Longitude Problem In 1759,...Ch. 3 - Referring to Example 3-11, (a) what heading must...Ch. 3 - Vector A points in the negative x direction....Ch. 3 - As two boats approach the marina, the velocity of...Ch. 3 - BIO Motion Camouflage in Dragonflies Dragonflies,...Ch. 3 - BIO Motion Camouflage in Dragonflies Dragonflies,...Ch. 3 - BIO Motion Camouflage in Dragonflies Dragonflies,...Ch. 3 - BIO Motion Camouflage in Dragonflies Dragonflies,...Ch. 3 - BIO Motion Camouflage in Dragonflies Dragonflies,...Ch. 3 - BIO Motion Camouflage in Dragonflies Dragonflies,...
Additional Science Textbook Solutions
Find more solutions based on key concepts
13. The hand in FIGURE Q7.13 is pushing on the back of block A. Blocks A and B, with mB > mA, are connected by ...
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
What do we mean by an “RNA world,” and why do scientists suggest that such a world preceded the current “DNA wo...
Life in the Universe (4th Edition)
A ball rebounds elastically from the floor. What doesthis situation share with the ideas of momentum conservati...
Modern Physics
63. In 1780, in what is now referred to as “Brady’s Leap,” Captain Sam Brady of the U.S. Continental Army escap...
College Physics: A Strategic Approach (4th Edition)
(a) Show that .
[Hint: Use integration by parts.]
(b) Let be the step function: . (1.95)
Show that .
Introduction to Electrodynamics
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
- The acceleration of a particle is given by a = 2t-20, where a is in meters per second squared and t is in seconds. Determine the velocity and displacement as functions of time. The initial displacement at t = 0 is so = -5 m, and the initial velocity is vo = 6 m/s. Once you have determined the functions of time, answer the questions. Questions: When t = 5.1 s, S= V = a = Mi MI i m m/s m/s²arrow_forwardI am having trouble with an average speed problem. The problem states that a person walks at 4.5 meters per second from point a to b. Then walks back from point b to a at a speed of 3.2 m/s. I know that average speed is displacement/time. However I am not sure how to calculate time or displacement from the two givens. The problem also gives that the average velocity is 0.arrow_forwardA motorist drives north for 35.0 minutes at 85.0 km/h andthen stops for 15.0 minutes. He then continues north, traveling130. km in 2.00 h. (a) What is his total displacement? (b)What is his average velocity?arrow_forward
- Assume that you are driving a car at 10.0 km/h and then you accelerate to 80.0 km/h with an acceleration of 3.50 m/s². How much time will it take until you reach the velocity 80.0 km/h? (Provide you answer in s with two decimal places.) Your Answer:arrow_forwardA student begins at rest and then walks north at a speed of v1=0.65m/s. The student then turns south and walks at a speed of v2=0.28m/s. Take north to be the positive direction. a)What is the student's overall average velocity vavg, in meters per second, for the full trip assuming the student spent equal times at speeds v1 and v2? b) If the student travels in the stated directions for 30.0s30.0s at speed v1 and 20.0s at speed v2, what is the net displacement, in meters, during the trip? c) If it takes the student 1.2s to reach the speed v1, from rest, what is the magnitude, in meters per squared second, of the student’s average acceleration during that time?arrow_forwardA hiker walks 2.00 km north and then 3.00 km east, all in2.50 hours. Calculate the magnitude and direction of thehiker’s (a) displacement (in km) and (b) average velocity (inkm/h) during those 2.50 hours. (c) What was her averagespeed during the same time interval?arrow_forward
- consider the equation for a position, s, of a particle:s(t) = 2.7t - 4.6 where s is in meters and t in second.a. Find speed of the particle when t=5 secondsb. which of the following is closest to the total distance traveled by the particle for the first 10 sec of its motion?(17.80m, 31.6m, 27.0m, 22.4m)arrow_forwardA jogger takes the following route to the entrance of their local park: north 120 m, west 100 m, south 35 m, and finally west 50 m. It takes her 2 minutes and 18 seconds to reach the park entrance. (a) what distance did the jogger travel? (b) what is the displacement of the jogger as she enters the park? (c) what is the average speed of the jogger? (d) what is the average velocity of the jogger?arrow_forwardYou drive a beat-up pickup truck down a straight road for 5.2 mi at 43 mi/h, at which point yourun out of fuel. You walk 1.2 mi farther, to the nearest gas station, in 27 min (= 0.450 h). What isyour average velocity from the time you started your truck to the time that you arrived at thestation?arrow_forward
- Usually, Tony travels to Bunbury from Perth city in 2.50 hours. One day he increases his average speed by 12.0 km/h and takes 22.5 minutes less time to reach Bunbury. (a) What was his usual average speed? What was the distance travelled? (b) On the way he stopped at a rail crossing (6.00 m wide) and a train (total length 144m) decelerating at -0.585 ms2 just entered the crossing with a velocity of 13.7 m s¹. Sketch a diagram and find the minimum time for the last carriage of the train to clear the crossing.arrow_forwardYou drive a beat-up pickup truck along a straight road for 8.4 km at 70 km/h, at which point the truck runs out of gasoline and stops. Over the next 30 min, you walk another 2.0 km farther along the road to a gasoline station. (a) What is your overall displacement from the beginning of your drive to your arrival at the station?arrow_forwardThe velocity of a particle moving along x-axis is defined by v=s3-4s2+6s where v is in m/s ands in meters.Compute the velocity when s=2m, compute the acceleration when s=2m.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
Relative Velocity - Basic Introduction; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=_39hCnqbNXM;License: Standard YouTube License, CC-BY