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 2.4, Problem 4EYU
At a certain time, object 1 has an initial velocity of -2 m/s and an acceleration of 3 m/s2. At the same time, object 2 has an initial velocity of 5 m/s and an acceleration of -1 m/s2. (a) Is the speed of object 1 increasing or decreasing? Explain. (b) Is the velocity of object 1 increasing or decreasing? Explain. (c) Is the speed of object 2 increasing or decreasing? Explain. (d) Is the velocity of object 2 increasing or decreasing? Explain.
Expert Solution & Answer
Learn your wayIncludes step-by-step video
schedule05:30
Students have asked these similar questions
A particle travels along the +x axis. At t = 0 s, its velocity is 10.0 m/s and its acceleration is -2.0 m/s^2.
Question A: Which of the following statements is true?
1. The particle will slow down and eventually come to a complete stop
2. The particle cannot have a negative acceleration and be moving in the positive x direction
3. The particle will continue to move in the positive x direction, slowing but never coming to a complete stop.
4. The particle will slow down, stop momentarily, then speed up in the x- direction.
Question B: At what time will the particle be stopped?
1. t = 5.0 s
2. t = -5.0 s
3. t = -0.2 s
4. The particle does not ever stop
Question C: What is the particle's displacement from its initial position at t = 10.0 s ?
Please Answer questions A, B, and C
While entering a freeway, a car accelerates from rest at a rate of 2.81 m/s² for 13.3s. To help with this question, draw a sketch
of the situation and list the knowns in this problem.
a) How far does the car travel in those 13.3s?
b) What is the car's final velocity?
Submit answer
Answers (in progress)
Answer
m
m/s
(3
4
Score
-/0.5
-/0.5
0/1
Two cars emerge side by side from a tunnel. Car A is traveling with a speed of 60km/h and has an acceleration of 40 km/h/min. Car B has a speed of 40km/hand has an acceleration of 60km/h/min .Which car is passing the other as they come out of the tunnel? Explain your reasoning
Chapter 2 Solutions
Physics (5th Edition)
Ch. 2.1 - For each of the following questions, give an...Ch. 2.2 - The position of an object as a function of time is...Ch. 2.3 - Figure 2-10 shows the position-versus-time graph...Ch. 2.4 - At a certain time, object 1 has an initial...Ch. 2.5 - The equation of motion for an object moving with...Ch. 2.6 - A submerged alligator swims directly toward two...Ch. 2.7 - On a distant, airless planet, an astronaut drops a...Ch. 2 - You take your dog on a walk to a nearby park. On...Ch. 2 - Does an odometer in a car measure distance or...Ch. 2 - An astronaut orbits Earth in the space shuttle. In...
Ch. 2 - After a tennis match the players dash to the net...Ch. 2 - Does a speedometer measure speed or velocity?...Ch. 2 - Is it possible for a car to circle a racetrack...Ch. 2 - For what kinds of motion are the instantaneous and...Ch. 2 - Assume that the brakes in your car create a...Ch. 2 - The velocity of an object is zero at a given...Ch. 2 - If the velocity of an object is nonzero, can its...Ch. 2 - Is it possible for an object to have zero average...Ch. 2 - A batter hits a pop fly straight up. (a) Is the...Ch. 2 - A person on a trampoline bounces straight upward...Ch. 2 - A volcano shoots a lava bomb straight upward. Does...Ch. 2 - Referring to Figure 2-27, you walk from your home...Ch. 2 - In Figure 2-27, you walk from the park to your...Ch. 2 - The two tennis players shown in Figure 2-28 walk...Ch. 2 - The golfer in Figure 2-29 sinks the ball in two...Ch. 2 - A jogger runs on the track shown in Figure 2-30....Ch. 2 - Predict/Calculate A child rides a pony on a...Ch. 2 - Predict/Explain You drive your car in a straight...Ch. 2 - Predict/Explain You drive your car in a straight...Ch. 2 - Usain Bolt of Jamaica set a world record in 2009...Ch. 2 - BIO Kangaroos have been clocked at speeds of 65...Ch. 2 - Rubber Ducks A severe storm on January 10, 1992,...Ch. 2 - Radio waves travel at the speed of light,...Ch. 2 - It was a dark and stormy night, when suddenly you...Ch. 2 - BIO Nerve Impulses The human nervous system can...Ch. 2 - A finch rides on the back of a Galapagos tortoise,...Ch. 2 - You jog at 9.1 km/h for 5.0 km, then you jump into...Ch. 2 - A dog runs back and forth between its two owners,...Ch. 2 - BIO Predict/Calculate Blood flows through a major...Ch. 2 - BIO Predict/Calculate Blood flows through a major...Ch. 2 - In heavy rush-hour traffic you drive in a straight...Ch. 2 - Predict/Calculate An expectant father paces back...Ch. 2 - The position of a particle as a function of time...Ch. 2 - The position of a particle as a function of time...Ch. 2 - Predict/Calculate A tennis player moves back and...Ch. 2 - On your wedding day you leave for the church 30.0...Ch. 2 - The position-versus-time plot of a boat...Ch. 2 - The position of a particle as a function of time...Ch. 2 - The position of a particle as a function of time...Ch. 2 - Predict/Explain On two occasions you accelerate...Ch. 2 - A 747 airliner reaches its takeoff speed of156...Ch. 2 - At the starting gun, a runner accelerates at1.9...Ch. 2 - A jet makes a landing traveling due east with a...Ch. 2 - A car is traveling due north at 23.6 m/s. Find the...Ch. 2 - A motorcycle moves according to the...Ch. 2 - A person on horseback moves according to the...Ch. 2 - Running with an initial velocity of +9.2 m/s, a...Ch. 2 - Predict/Calculate Assume that the brakes in your...Ch. 2 - As a train accelerates away from a station, it...Ch. 2 - A particle has an acceleration of +6.24 m/s2 for...Ch. 2 - Landing with a speed of 71.4 m/s, and traveling...Ch. 2 - When you see a traffic light turn red, you apply...Ch. 2 - A ball is released at the point x = 2 m on an...Ch. 2 - Starting from rest, a boat increases its speed to...Ch. 2 - The position of a car as a function of time is...Ch. 2 - The position of a ball as a function of time is...Ch. 2 - BIO A cheetah can accelerate from rest to 25 0 m/s...Ch. 2 - A sled slides from rest down an icy slope....Ch. 2 - A child slides down a hill on a toboggan with an...Ch. 2 - The Detonator On a ride called the Detonator at...Ch. 2 - Jules Verne In his novel From the Earth to the...Ch. 2 - BIO Bacterial Motion Approximately 0.1% of the...Ch. 2 - Two cars drive on a straight highway. At time t =...Ch. 2 - A Meteorite Strikes On October 9, 1992, a 27-pound...Ch. 2 - A rocket blasts off and moves straight upward from...Ch. 2 - Predict/Calculate You are driving through town at...Ch. 2 - Predict/Calculate You are driving through town at...Ch. 2 - BIO Predict/Calculate A Tongues Acceleration When...Ch. 2 - BIO Surviving a Large Deceleration On July 13,...Ch. 2 - A boat is cruising in a straight line at a...Ch. 2 - A model rocket rises with constant acceleration to...Ch. 2 - The infamous chicken is dashing toward home plate...Ch. 2 - A bicyclist is finishing his repair of a flat tire...Ch. 2 - A car in stop-and-go traffic starts at rest, moves...Ch. 2 - A car and a truck are heading directly toward one...Ch. 2 - Suppose you use videos to analyze the motion of...Ch. 2 - At the edge of a roof you throw ball 1 upward with...Ch. 2 - A cliff diver drops from rest to the water below....Ch. 2 - For a flourish at the end of her act, a juggler...Ch. 2 - Soaring Shaun During the 2014 Olympic games,...Ch. 2 - BIO Gulls are often observed dropping clams and...Ch. 2 - A volcano launches a lava bomb straight upward...Ch. 2 - An Extraterrestrial Volcano The first active...Ch. 2 - BIO Measure Your Reaction Time Heres something you...Ch. 2 - Predict/Explain A carpenter on the roof of a...Ch. 2 - Predict/Explain Figure 2-40 shows a v-versus-t...Ch. 2 - A ball is thrown straight upward with an initial...Ch. 2 - On a hot summer day in the state of Washington...Ch. 2 - Highest Water Fountain The USAs highest fountain...Ch. 2 - Wrongly called for a foul, an angry basketball...Ch. 2 - To celebrate a victory, a pitcher throws her glove...Ch. 2 - Predict/Calculate Standing at the edge of a cliff...Ch. 2 - You shoot an arrow into the air. Two seconds later...Ch. 2 - While riding on an elevator descending with a...Ch. 2 - A hot-air balloon is descending at a rate of 2.3...Ch. 2 - A model rocket blasts off and moves upward with an...Ch. 2 - BIO The southern flying squirrel (Glaucomys...Ch. 2 - Hitting the High Striker A young woman at a...Ch. 2 - While sitting on a tree branch 10.0 m above the...Ch. 2 - An astronaut on the Moon drops a rock straight...Ch. 2 - Taipei 101 An elevator in the Taipei 101...Ch. 2 - A Supersonic Waterfall Geologists have learned of...Ch. 2 - A juggler throws a ball straight up into the air....Ch. 2 - CE At the edge of a roof you drop ball A from...Ch. 2 - CE Two balls start their motion at the same time,...Ch. 2 - CE Refer to the position-versus-time plot in...Ch. 2 - Drop Tower NASA operates a 2.2-second drop tower...Ch. 2 - The velocity-versus-time graph for an object...Ch. 2 - At the 13th green of the U.S. Open you need to...Ch. 2 - A glaucous-winged gull, ascending straight upward...Ch. 2 - A doctor, preparing to give a patient an...Ch. 2 - A hot-air balloon has just lifted off and is...Ch. 2 - Astronauts on a distant planet throw a rock...Ch. 2 - BIO A Jet-Propelled Squid Squids can move through...Ch. 2 - A ball, dropped from rest, covers three-quarters...Ch. 2 - You drop a ski glove from a height h onto fresh...Ch. 2 - To find the height of an overhead power line, you...Ch. 2 - Sitting in a second-story apartment, a physicist...Ch. 2 - Bam!Apollo 15 Lands on the Moon The first word...Ch. 2 - Bam!Apollo 15 Lands on the Moon The first word...Ch. 2 - Bam!Apollo 15 Lands on the Moon The first word...Ch. 2 - Bam!Apollo 15 Lands on the Moon The first word...Ch. 2 - Referring to Example 2-17 Suppose the speeder (red...Ch. 2 - Referring to Example 2-17 The speeder passes the...Ch. 2 - Predict/Calculate Referring to Example 2-21 (a) In...Ch. 2 - Referring to Example 2-21 Suppose the balloon is...
Additional Science Textbook Solutions
Find more solutions based on key concepts
58. Write full electron configurations and indicate the valence electrons and the core electrons for each eleme...
Introductory Chemistry (6th Edition)
WHAT IF? Is allopatric speciation more likely to occur on an island close to a mainland or on a more isolated ...
Campbell Biology (11th Edition)
Plants use the process of photosynthesis to convert the energy in sunlight to chemical energy in the form of su...
Campbell Essential Biology with Physiology (5th Edition)
76. A proton is fired from far away toward the nucleus of an iron atom. Iron is element number 26, and the diam...
College Physics: A Strategic Approach (3rd Edition)
How does an obligate aerobe differ from a facultative aerobe?
Brock Biology of Microorganisms (15th Edition)
1.1 Write a one-sentence definition for each of the following:
a. chemistry
b. chemical
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
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
- An object moves with an acceleration of 10 m/s^2. Which of the following statements is true? A) The acceleration of the object decreases by 5 m/s^2 every second. B) The object is moving at 5 m every second. C) The speed of the object increases by 10 m/s every second. D) The acceleration of the object increases by 5 m/s^2 every secondarrow_forwardA breaststroke competition consists of swimming back to the opposite end and back to where you started. Suppose a swimmer completes the first 50 m of the 100 m breaststroke in 39.1 seconds. When he reaches the opposite end of the 50 m long pool, he turns back and swims to the starting point in 42.5 seconds. What is the swimmer's average speed for the return leg only?a) 1.18 m / sb) 1.23 m / sc) 0.12 m / sd) 0 m / sarrow_forwardA scooter begins at rest at t0=0.0s. The scooter starts moving, and eventually covers a distance d=886m in a time tf=176s. In a coordinate system with north being the positive x direction, the scooter's motion is towards the north. 1)What was the scooter's average speed, in meters per second, during this period? 2)What was the scooter's displacement, in meters, in the northern direction during this period? 3)What was the scooter's average velocity, in meters per second, in the northern direction during this period ? 4)A second scooter begins traveling from rest at t0=0.0s and stops at t′f=176s. If this scooter's final velocity at t′fwas 12.0m/s , then what was this scooter's average acceleration, in meters per squared second, in the northern direction?arrow_forward
- At t=0 an object has a velocity of 35 m/s and a steady acceleration of -10 m/s2. Make a sketch of velocity vs. time for this motion from t=0 to t=5 s. Make a sketch of acceleration vs. time for this motion from t=0 to t=5 s. Does the object change directions between 0 and 6 s?arrow_forwardStarting from a pillar, you run 400 m east (+x direction) at an average speed of 4 m/s, and then run 560 m north (+y direction) at an average speed of 7 m/s to a post. Calculate your average speed from pillar to post. a.) 82 m/s b.) 5.33 m/s c.) Not enough information.arrow_forwardWhich one of the following objects has a average speed of 20 mi/hour? O A car moves a distance of 40 miles and changes its velocity by 20 mi/hr after 1 hour. O A car moves a distance of 20 miles and is 20 miles from the starting point after 4 hours. O A car moves a diştance of 40 miles and is 20 miles from the starting point after 1 hour. O A car moves a distance of 40 miles and is 20 miles from the starting point after 2 hours. ssionld-D464133958#arrow_forward
- Which one of the following objects has a average velocity of 20 mi/hour? O A car moves a distance of 20 miles and is 20 miles from the starting point after 4 hours. O A car moves a distance of 40 miles and is 20 miles from the starting point after 2 hours. O A car moves a diştance of 40 miles and changes its velocity by 20 mi/hr after 1 hour. O A car moves a distance of 40 miles and is 20 miles from the starting point after 1 hour 6 7 8 9,arrow_forward1. The car stops at the traffic light. It then moves along a straight path so that its distance from the light is given by x(t) = bt² – ct³, where b = 2.40 and c = 0.120. a) Calculate the average velocity of the car for the time interval t = 0 to t = 10.0 s. b) Determine the car's instantaneous velocity at t = 0, t = 5s and t = 10s. c) How long after starting from rest is the car again at rest.arrow_forwardA girl is standing at the edge of a cliff 100. m above the ground. She reaches out over the edge of the cliff and throws a rock straight upward with a speed 8.00 m/s. a) How long does it take the rock to hit the ground? b) What is the speed of the rock the instant before it hits the ground? Please type answerarrow_forward
- Does acceleration depend on the speed of an object? Why or why not? Give an example of a slow object having a larger acceleration than a fast object. Can anyone think of an example of an object moving in such a way so that it is accelerating while having zero velocity?arrow_forwardA train makes a journey in which at a point on its trajectory a speed of 80.0 km / h is measured towards the east, while half an hour later the speed is 65.0 km /h towards the east. Can you calculate the average acceleration in this half hour of travel? a) No, because we do not know the starting position or the final position of that half hour of travel. b) No, because we do not know how the direction of the train changed in the other moments of that half hour of travel. c) Yes, and it has a magnitude of 30.0 km/h?? westward. d) Yes, and it has a magnitude of 30.0 km / h²2? to the east.arrow_forwardA hot air balloon is travelling vertically upward at a constant speed of 3.7 m/s. When it is 27 m above ground, a package is released from the ballon. a) After it's released, for how long is the package in the air in units of s? Acceleration of gravity is 9.8 m/s/s. b)What is the speed just before impact with the ground in m/s? c) Now assume the hot air balloon is traveling vertically downward at a constant speed of 3.7 m/s. After the package is released, how long is it in the air in s? d) What is the speed just before impact with the ground in m/s?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
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