Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
4th Edition
ISBN: 9780133942651
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 5, Problem 8CQ
An object experiencing a constant force accelerates at 8 m/s2.
What will the acceleration of this object be if.
- The force is halved? Explain.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 500 kg trailer being pulled behind a car is subject of a 100 Newton resistance force due to friction. WHat force must the car exert on the trailer if the trailer is to move
a. at a constant speed of 25 km/hr?
b. forward with ana cceleration of 2.0 m/s^2
c. starting from rest (a=k), the car and trailer travel 150 m in 10 s?
The horizontal position of a 4500-N car driving down a long, flat, straight road is given by the following
formula, where t is measured in seconds.
x(t) = (1.2 m/s³) t³ - (1.8) ²
a. Use the weight of the car to find its mass.
b. What is the x-component of the car's velocity, as a function of time?
c. What is the x-component of the car's acceleration, as a function of time?
d. What is the x-component of the net force acting on the car at time t = 0.50 s, t = 1.0 s, and t = 1.5 s?
d) A ball rolls off the edge of a cliff. The ball’s velocity is 27 m.s−1 just before it hits the ground.i. What is the height of the cliff?ii. How long does it take the ball to hit the ground?
e) You push with a 2 N force on a box that weighs 7 N. A frictional force of 3N opposes the motion of the box. Calculate the acceleration of the box?
Chapter 5 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
Ch. 5 - An elevator suspended by a cable is descending at...Ch. 5 - A compressed spring is pushing a block across a...Ch. 5 - A brick is falling from the roof of a three-story...Ch. 5 - In FIGURE Q5.4 block B is falling and dragging...Ch. 5 - You toss a ball straight up in the air....Ch. 5 - A constant force applied to A causes A to...Ch. 5 - An object experiencing a constant force...Ch. 5 - An object experiencing a constant force...Ch. 5 - If an object is at rest, can you conclude that...Ch. 5 - If a force is exerted on an object, is it possible...
Ch. 5 - Is the statement “An object always moves in the...Ch. 5 - Prob. 12CQCh. 5 -
13. Is it possible for the friction force on an...Ch. 5 -
14. Suppose you press your physics book against...Ch. 5 - FIGURE Q5.15 shows a hollow tube forming...Ch. 5 - Prob. 16CQCh. 5 - Which of the following are inertial reference...Ch. 5 - Prob. 1EAPCh. 5 - Prob. 2EAPCh. 5 - A baseball player is sliding into second base....Ch. 5 - Prob. 4EAPCh. 5 -
5. An arrow has just been shot from a bow and is...Ch. 5 - Two rubber bands cause an object to accelerate...Ch. 5 - Two rubber bands pulling on an object cause it to...Ch. 5 - FIGURE EX5.8 shows acceleration-versus-force graph...Ch. 5 - Prob. 9EAPCh. 5 - Prob. 10EAPCh. 5 - Prob. 11EAPCh. 5 - FIGURE EX5.12 shows an acceleration-versus-force...Ch. 5 - Prob. 13EAPCh. 5 -
14. FIGURE EX5.14 shows the acceleration of...Ch. 5 - Prob. 15EAPCh. 5 - Prob. 16EAPCh. 5 - Prob. 17EAPCh. 5 - Exercise 17 trough 19 show two of the three forces...Ch. 5 - Exercise 17 trough 19 show two of the three forces...Ch. 5 - Prob. 20EAPCh. 5 - Prob. 21EAPCh. 5 - Prob. 22EAPCh. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 -
Exercise 23 through 27 describe a situation. For...Ch. 5 -
Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Prob. 28EAPCh. 5 - Prob. 29EAPCh. 5 - Prob. 30EAPCh. 5 - Prob. 31EAPCh. 5 - A single force with x-component Fxacts on a 500 g...Ch. 5 - A constant force is applied to an object, causing...Ch. 5 - A constant force is applied to an object, causing...Ch. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - through 40 show a free-body diagram. For each:...Ch. 5 - Prob. 37EAPCh. 5 - Prob. 38EAPCh. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - In lab, you propel a cart with four known forces...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - The leaf hopper, champion jumper of the insect...Ch. 5 - Prob. 54EAPCh. 5 -
55. A heavy boxy is in the back of a truck. The...Ch. 5 - If a car stops suddenly, you feel “thrown...Ch. 5 - Prob. 57EAP
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 particle of mass m traveling horizontally with initial speed v0 encounters a dissipative force f (v) = cv2, where c is a constant. a.Provide the equation of motion of the particle with an appropriate initial condition. b. Find the speed of the particle v(t). c. Find its acceleration a(t). d. What is its distance traveled x(t)?arrow_forwardWhen a 0.058 kg tennis ball is served, it accelerates from rest to a speed of 45.0 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 0.440 m. What is the magnitude of the net force acting on the ball? What is the average velocity of the ball? Over what time period was the ball struck? What is the acceleration of the ball? What is the net force on the ball? If the ball had been heavier, but experienced the same change in velocity, would the applied force have to be greater or lesser than before?arrow_forwardQuestion 2 pleasearrow_forward
- An object is shot straight upward from sea level with an initial velocity of 700 ft/sec. a. Assuming that gravity is the only force acting on the object, give an upper estimate for its velocity after 5 sec have elapsed. Use g= 32 ft/sec- for the gravitational acceleration. b.Using At = 1 sec, find a lower estimate for the height attained after 5 sec.arrow_forwardSuppose you hang a 1.0 kg mass from a spring scale. But this time, instead of holding your hand still so that the acceleration is zero, you let your arm drop so that the mass accelerates downward at 5.2 m/s2. What force (how many Newtons) will the spring scale read while this acceleration is happening?arrow_forwardA heavy metal tray with mass 25.0 kg tray lies on a table. On top of the tray is another stone with mass 12.0 kg. You lift the traywith the stone on it upwards with a force of 500 N. What is the magnitude of the acceleration of the stone? (g - 9.8 m/s^2) A. 13.5 m/s2 B. 3.7 m/s^2 C. 11.4 m/s^2 D. 5.5 m/s^2arrow_forward
- A 200 kg man rides in an elevator while standing on a scale. As the elevator rises with a constant acceleration of 6m/s2, what is the reading of the scale? b) As the elevator lowers itself with a constant acceleration of 6m/s2, what is the reading of the scale? c) As the elevator rises with a constant velocity of 2m/s, what is the reading of the scale? d) A 200 kg man rides an elevator while standing on a scale. What is the weight of the man?arrow_forwardA 70-kg man stands on a bathroom scale inside an elevator. The scale measures in units of newtons. a. The elevator accelerates upward from rest at a rate of 1.20 m/s2 for 1.50 s. What does the scale read during this 1.50 s interval? b. The elevator continues upward at constant velocity for 8.50 s. What does the scale read now? c. While still moving upward, the elevator's speed decreases at a rate of 0.600 m/s2 for 3.00 s. What is the scale reading during this time?arrow_forward1. A 200-N block in contact with a level plane is acted upon by a horizontal force P = 100N. The fk = 0.20. What time will the velocity of the block be increased from 4m/s to 10m/s? 2. At time t = 0 s, an object is observed at x = 0 m; and its position along the x axis follows this expression: x = –4t + t2, where the units for distance and time are meters and seconds, respectively. What is the object's displacement ?x between t = 1.0 s and t = 3.0 s?arrow_forward
- 1. Suppose a bike with a rider on it. having a total mass of 63 kg brakes and reduces its velocity from 8.5 m/s to 0 m/s in 3.0 seconds. What is the magnitude of the braking force?arrow_forwardA child is rolling a ball down a slide to his friend. The ball has a mass of 3 kg, and the slope of the slide has an angle of 38 degrees. If the friction coefficient between the slide and the ball is .5 A) what is the acceleration of the ball in m/s2 ? B) When the ball travels 2 meters what will its speed be?arrow_forwardN7. An elevator of mass 890 kg has an upward force of 1.10 x 10ªN applied to it. Determine the following: a) the net force on the elevator. b) the acceleration of the elevator. (ANS: a) 2.23 x 10³ N b) 2.56 m/s²) 18. In a competition, a small robot accelerates forward at 0.25 m/s² as it pushes a wood a = 0.25 m/s² block of mass 1.6 kg towards a basket. A friction force of 3.7 N exists between the block and floor. a) What is the net force acting on the block? b) What force is the robot applying to accelerate the block? (ANS: a) 0.4 N b) 4.1 N) a = 0.25 m/s? 000 9. A hoist is used to lift a 780 kg car upward with an acceleration of 0.110 m/s². a) What is the net force acting on the car? b) What force was used to lift the car? (ANS: a) 86 N b) 7.73 x 10³ N) a 0.11 m/s Wigh searrow_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
Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom;https://www.youtube.com/watch?v=3rZR7FSSidc;License: Standard Youtube License