Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 5, Problem 14PCE
The Ux-versus-time graph for a 1.8-kg object is shown in Figure 5-28. A single force acts on the object and the force has only an x component. What is F, at (a) t = 0.50 s, (b) t = 2.0 s, and (c) t = 4.0 s?
Figure 5-28 Problem 14
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Suppose the roller-coaster car in the figure passes
32 m/
Part A
2
point 1 with a speed of 1.30 m/s.
V2
3
4
μA
If the average force of friction is equal to 0.15 of
its weight, with what speed will it reach point 2?
The distance traveled is 41 m.
Value
Units
Express your answer to two significant figures
and include the appropriate units.
26 m
14 m
B
?
A worker pushes a 35.0-kg package on a horizontal roller-belt conveyor until it reaches a certain speed. The package then coasts on the horizontal conveyor, all the while slowing down, until it
comes to a complete stop after moving 1.20 m. While the package is coasting on the conveyor, the opposing friction force averages 6.00 N. Use the WET to find the speed of the package
after the worker pushes it and just as it begins to coast.
0.625 m/s
0.759 m/s
0.600 m/s
0.510 m/s
0.802 m/s
0.641 m/s
Dancers experience large forces associated with the jumps they make. For example, when a dancer lands after a vertical jump, the force exerted on the head by the neck must exceed the head's weight by enough to cause the head to slow down and come to rest. The head is about 9.4%% of a typical person's mass. Video analysis of a 70 kgkg dancer landing after a vertical jump shows that her head slows down from 4.2 m/sm/s to rest in a time of 0.19 s.What is the magnitude of the average force that her neck exerts on her head during the landing?
Chapter 5 Solutions
Physics (5th Edition)
Ch. 5.1 - Two forces have magnitudes F1 and F2. If these...Ch. 5.2 - Which of the following statements is correct? A: A...Ch. 5.3 - The acceleration of an object has a magnitude a....Ch. 5.4 - A force F pushes on three boxes that slide without...Ch. 5.5 - An object is acted on by a single force that is at...Ch. 5.6 - When a certain person steps onto a scale on solid...Ch. 5.7 - Figure 5-23 shows four identical bricks that are...Ch. 5 - Driving down the road, you hit the brakes...Ch. 5 - Youve probably seen pictures of someone pulling a...Ch. 5 - As you read this, you are most likely sitting...
Ch. 5 - When a dog gets wet, it shakes its body from head...Ch. 5 - A young girl slides down a rope. As she slides...Ch. 5 - A block of mass m hangs from a string attached to...Ch. 5 - An astronaut on a space walk discovers that his...Ch. 5 - Two untethered astronauts on a space walk decide...Ch. 5 - In Figure 5-25 Wilbur asks Mr. Ed, the talking...Ch. 5 - A whole brick has more mass than half a brick,...Ch. 5 - The force exerted by gravity on a whole brick is...Ch. 5 - Is it possible for an object at rest to have only...Ch. 5 - Is it possible for an object to be in motion and...Ch. 5 - A bird cage, with a parrot inside, hangs from a...Ch. 5 - Suppose you jump from the cliffs of Acapulco and...Ch. 5 - A friend tells you that since his car is at rest,...Ch. 5 - Since all objects are weightless in orbit, how is...Ch. 5 - To clean a rug, you can hang it from a clothesline...Ch. 5 - If you step off a high board and drop to the water...Ch. 5 - Is it possible for an object to be moving in one...Ch. 5 - Since a bucket of water is weightless in space,...Ch. 5 - In the movie The Rocketeer, a teenager discovers a...Ch. 5 - List three common objects that have a weight of...Ch. 5 - An object of mass m is initially at rest. After a...Ch. 5 - On a planet far, far away, an astronaut picks up a...Ch. 5 - In a grocery store, you push a 15.4-kg shopping...Ch. 5 - You are pulling your little sister on her sled...Ch. 5 - A 0.53-kg billiard ball initially at rest is given...Ch. 5 - A 92-kg water skier floating in a lake is pulled...Ch. 5 - A 0.5-kg object is acted on by a force whose x...Ch. 5 - Predict/Explain You drop two balls of equal...Ch. 5 - Predict/Calculate A 42.0-kg parachutist is moving...Ch. 5 - Predict/Calculate In baseball, a pitcher can...Ch. 5 - A major-league catcher gloves a 92 mi/h pitch and...Ch. 5 - Driving home from school one day, you spot a ball...Ch. 5 - Stopping a 747 A 747 jetliner lands and begins to...Ch. 5 - The Ux-versus-time graph for a 1.8-kg object is...Ch. 5 - Predict/Calculate A drag racer crosses the finish...Ch. 5 - Predict/Explain A small car collides with a large...Ch. 5 - Predict/Explain A small car collides with a large...Ch. 5 - As you catch a 0.14-kg ball it accelerates at...Ch. 5 - BIO Woodpecker Concussion Prevention A woodpecker...Ch. 5 - On vacation, your 1400-kg car pulls a 560-kg...Ch. 5 - Predict/Calculate An 85-kg parent and a ?4-kg...Ch. 5 - A force of magnitude 7.50 N pushes three boxes...Ch. 5 - A force of magnitude 7.50 N pushes three boxes...Ch. 5 - Predict/Calculate Two boxes sit side-by-side on a...Ch. 5 - A skateboarder on a ramp is accelerated by a...Ch. 5 - Three objects, A, B, and C, have x and y...Ch. 5 - A farm tractor tows a 3300-kg trailer up a 14...Ch. 5 - A shopper pushes a 7 5-kg shopping cart up a 13...Ch. 5 - Two crewmen pull a rail through a lock, as shown...Ch. 5 - A hockey puck is acted on by one or more forces as...Ch. 5 - To give a 19-kg child a ride, two teenagers pull...Ch. 5 - Predict/Calculate A 65-kg skier speeds down a...Ch. 5 - An object acted on by three forces moves with...Ch. 5 - A train is traveling up a 2 88 incline at a speed...Ch. 5 - The Force Exerted on the Moon In Figure 5-37 we...Ch. 5 - You pull upward on a stuffed suitcase with a force...Ch. 5 - BIO Brain Growth A newborn babys brain grows...Ch. 5 - Suppose a rocket launches with an acceleration of...Ch. 5 - During an episode of turbulence in an airplane you...Ch. 5 - At the bow of a ship on a stormy sea, a crewman...Ch. 5 - Predict/Calculate As part of a physics experiment...Ch. 5 - When you weigh yourself on good old terra firma...Ch. 5 - Predict/Calculate BIO Flight of the Samara A...Ch. 5 - When you lift a bowling ball with a force of 82 N,...Ch. 5 - A 23-kg suitcase is pulled with constant speed by...Ch. 5 - (a) Draw a free-body diagram for the skier in...Ch. 5 - A 9.3-kg child sits in a 3.7-kg high chair. (a)...Ch. 5 - Figure 5-39 shows the normal force N experienced...Ch. 5 - Figure 5-40 shows the normal force N as a function...Ch. 5 - A 5.0-kg bag of potatoes sits on the bottom of a...Ch. 5 - Predict/Calculate (a) Find the normal force...Ch. 5 - Predict/Calculate A gardener mows a lawn with an...Ch. 5 - Figure 5-41 Problems 53 53 An ant walks slowly...Ch. 5 - CE Predict/Explain Riding in an elevator moving...Ch. 5 - CE Predict/Explain Riding in an elevator moving...Ch. 5 - CE Give the direction of the net force acting on...Ch. 5 - CE Predict/Explain You jump out of an airplane and...Ch. 5 - In a tennis serve, a 0.070-kg ball can be...Ch. 5 - BIO Human Heart Force The left ventricle of the...Ch. 5 - A 51 5-kg swimmer with an initial speed of 1.25...Ch. 5 - The ax-versus-time graph for a 2.0-kg object is...Ch. 5 - A skateboarder starts from rest and rolls down a...Ch. 5 - The rotors of a 15,200-kg heavy-lift helicopter...Ch. 5 - As it pulls itself up to a branch, a chimpanzee...Ch. 5 - CE Each of the three identical hockey pucks shown...Ch. 5 - Predict/Calculate The VASIMR Rocket NASA plans to...Ch. 5 - An object of mass m = 5.95 kg has an acceleration...Ch. 5 - At the local grocery store, you push a 14.5-kg...Ch. 5 - BIO Predict/Calculate The Force of Running...Ch. 5 - BIO Predict/Calculate Grasshopper Liftoff To...Ch. 5 - Takeoff from an Aircraft Carrier On an aircraft...Ch. 5 - The Ux-versus-time graph for a 1.8-kg object is...Ch. 5 - Predict/Calculate An archer shoots a 0.024-kg...Ch. 5 - An apple of mass m = 0.13 kg falls out of a tree...Ch. 5 - BIO The Fall of T. rex Paleontologists estimate...Ch. 5 - Deep Space 1 The NASA spacecraft Deep Space 1 was...Ch. 5 - Your groceries are in a bag with paper handles....Ch. 5 - BIO A Leafhopper's Leap The motion of jumping...Ch. 5 - Predict/Calculate At the airport, you observe some...Ch. 5 - Prob. 80GPCh. 5 - Two boxes are at rest on a smooth, horizontal...Ch. 5 - You have been hired to help improve the material...Ch. 5 - Prob. 83GPCh. 5 - A baseball of mass m and initial speed U strikes a...Ch. 5 - When two people push in the same direction on an...Ch. 5 - An air-track cart of mass m1 = 0.14 kg is moving...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - Predict/Calculate Referring to Example 5-8 Suppose...Ch. 5 - Referring to Example 5-8 Suppose the force of 30.0...Ch. 5 - Predict/Calculate Referring to Figure 5-13 Suppose...Ch. 5 - Predict/Calculate Referring to Figure 5-13 Suppose...
Additional Science Textbook Solutions
Find more solutions based on key concepts
In your own words, briefly distinguish between relative dates and numerical dates.
Applications and Investigations in Earth Science (9th Edition)
a. Draw the mechanism for the following reaction if it a involves specific-base catalysis. b. Draw the mechanis...
Organic Chemistry (8th Edition)
Calculate the mass of NaCl in a 35-mL sample of a 1.3 M NaCl solution.
Introductory Chemistry (6th Edition)
Choose the best answer to each of the following. Explain your reasoning. Tycho Brahes contributions to astronom...
Cosmic Perspective Fundamentals
How Would the experiments result charge if oxygen (O2) were induced in the spark chamber?
Biology: Life on Earth with Physiology (11th Edition)
Match each of the following items with all the terms it applies to:
Human Physiology: An Integrated Approach (8th 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
- A box of mass 11.6 kg is slid along the floor. The initial speed of the box is 1.8 m/s and it comes to rest after 9.2 m. What was the magnitude of the force of friction acting on the box during this motion? You must enter you answer and include the Sl units. (For example: 3.0kg) Answer: Checkarrow_forwardStarting from rest, a 28.4 kg child rides a 9.75 kg sled down a frictionless ski slope. At the bottom of the hill, her speed is 6.4 m/s. If the slope makes an angle of 15.9° with respect to the horizontal, how far along the hill did she slide on her sled? distance = marrow_forwardIn a laboratory model of cars skidding to a stop, data is collected on blocks sliding across a table as each comes to rest. The stopping distance for each block is measured after it has been launched with some initial speed. Experiments are performed on four blocks, each with mass m = 7 kg. The coefficient of kinetic friction and the initial speed of each block was as follows: a) Block 1: Hx = 0.2 , vị = 2 m/s b) Block 2: µk = 0.2 , Vị = 4 m/s c) Block 3: µz = 0.4 , v; = 2 m/s d) Block 4: Hx = 0.4 , vị = 4 m/s Calculate the stopping distance for each block. Note that you can use either energetics (conservation of energy) or kinematics (forces) to answer this question. Try both!arrow_forward
- The 29 kg crate is subjected to a force having a constant direction and a magnitude 150 N. When s =15 m, the crate is moving to the right with a speed of 8 m/s (Figure 1) Determine its speed when s = 25 m. The coefficient of kinetic friction between the crate and the ground is puj. = 0.25 Express your answer to three significant figures and include the appropriate units. v= Value m/s F 30° o00000arrow_forwardA car weighing 3300lb is moving at a speed of 38mi / h at a certain moment the driver pressed the brakes hard, so the car slid until it was completely quiet and while sliding the car tires were subjected to a friction force of about 0.70 times as much as the weight of the car is what distance the car travels before it stops completely I consider that the movement is in the direction of the axle xarrow_forwardA body of mass m is on a horizontal plane with a coefficient of friction u, V; It moves at first speed. The object stops after traveling x distance. So which of the following is u equal to?arrow_forward
- A swimmer has just jumped off a diving board. The swimmer has a mass of m = 56.4 kg and jumps off a board that is h = 7.15 m above the water. Exactly T = 4.1 seconds after entering the water, her downward motion is stopped. a) Write an expression for the magnitude of the average upward force Fw exerted on her by the water in terms of the variables given in the problem statement and g (9.80 m/s2). b) What is the magnitude of the average upward force Fw (in N) exerted on her by the water?arrow_forwardA force F= (-2Nm)xi+(4Nm2)x2j-8Nk and a second force F=(-4Nm2)x2j-8Nk are applied to a 4 kg object between x= 1m and x= 6m. If the objects initial velocity is Vi=(-.9)i+(1.2)j+(.8)k m/s what is the objects's speed when it hits 6m?arrow_forwardA force F-zi + yi + zd (N) acts on a mass n=1 kg. If the particle starts at the origin (0, 0, 0) with zero initial velocity, What is its velocity when it reaches the point (1,1,1)? Hint: You may use: W F.dl Select one: v = V5 m V2 V3 marrow_forward
- F, (N) 10 IN 4. A 2.0 kg object moving along the x-axis experiences the force shown in the figure. The object's velocity is 4.0 m/s at x = 0 m. a) What is the object's velocity at x = 2 m? What is the object's velocity at x = 4 m? 0 -x (m) b) 1 2 3 -10 5. A mass of 0.500 kg starts from rest. A force acts on the mass that varies with distance according to F= 4x-5. a) Plot the graph and determine the area (integrate) to find how much work this force does from x = 0.00 m to xy= 2.00 m. b) Use the work-kinetic energy theorem to find the mass's final velocity. 6. Starting from rest, a 1000 kg elevator accelerates upward over a distance of 10 m. The tension in the elevator cable is a constant 1.16 x 104 N. a) How much work does gravity do on the elevator? b) How much work does the cable tension do on the elevator? c) What is the final speed of the elevator after it has traveled 10 m?arrow_forwardA box of mass 21 kg moves with a constant velocity of (4, 8, –4) m/s. Three forces are exerted on the box by objects in the surroundings. Two of these forces are F 1 = (1,0, 3) Nand É 2 = (-5, –1, 19) N. What is the third force? F3 = ( i ! )N i iarrow_forwardA horizontal force is applied to an object weighing 392 N that causes its speed to increase uniformly from 0 m/s to 6 m/s in 3 seconds. If we disregard the friction value, calculate the applied forcearrow_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
Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom;https://www.youtube.com/watch?v=3rZR7FSSidc;License: Standard Youtube License