Physical Universe
16th Edition
ISBN: 9780077862619
Author: KRAUSKOPF, Konrad B. (konrad Bates), Beiser, Arthur
Publisher: Mcgraw-hill Education,
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 50E
Before picking up the passengers, the driver of the car of Exercise 49 shifts into neutral when the car is moving at 80 km/h and finds that its speed has dropped to 65 km/h after 10 s. What was the average drag force acting on the car?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of 0.5 meters per second2, the force exerted by the elevator on the man will be
answer choices
400 N
800 N
1200 N
1000 N
A person is driving a car with a velocity v as shown below. Suddenly a force acts on the car for a short time giving rise to an acceleration also shown in the figure.
As a result of this acceleration, the speed of the car will
a. increase
b. decrease
c. remain the same
d. will increase but will eventually decrease
A woman stands on a weighing scale in a non - moving elevator. When the elevator started to move, the scale momentarily reads only 0.60 of the person’s normal weight. Find acceleration (m/s^2)
Chapter 2 Solutions
Physical Universe
Ch. 2 - Which of the following quantities is not a vector...Ch. 2 - Which of the following statements is incorrect? a....Ch. 2 - A box suspended by a rope is pulled to one side by...Ch. 2 - The sum of two vectors is a minimum when the angle...Ch. 2 - In which of the following examples is the motion...Ch. 2 - Two objects have the same size and shape but one...Ch. 2 - The acceleration of a stone thrown upward is a....Ch. 2 - You are riding a bicycle at constant speed when...Ch. 2 - When an object is accelerated, a. its direction...Ch. 2 - If we know the magnitude and direction of the net...
Ch. 2 - The weight of an object a. is the quantity of...Ch. 2 - Compared with her mass and weight on the earth, an...Ch. 2 - The earth and the moon exert equal and opposite...Ch. 2 - A car that is towing a trailer is accelerating on...Ch. 2 - When a boy pulls a cart, the force that causes him...Ch. 2 - In order to cause something to move in a circular...Ch. 2 - An object is moving in a circle with a constant...Ch. 2 - A car rounds a curve on a level road. The...Ch. 2 - The centripetal force that keeps the earth in its...Ch. 2 - The gravitational force with which the earth...Ch. 2 - The speed needed to put a satellite in orbit does...Ch. 2 - An astronaut inside an orbiting satellite feels...Ch. 2 - A bicycle travels 12 km in 40 min. Its average...Ch. 2 - Which one or more of the following sets of...Ch. 2 - An airplane whose airspeed is 200 km/h is flying...Ch. 2 - A ship travels 200 km to the south and then 400 km...Ch. 2 - How long does a car whose acceleration is 2 m/s2...Ch. 2 - A ball is thrown upward at a speed of 12 m/s. It...Ch. 2 - A car that starts from rest has a constant...Ch. 2 - A car traveling at 10 m/s begins to be accelerated...Ch. 2 - A car with its brakes applied has an acceleration...Ch. 2 - The distance the car in Multiple Choice 31 travels...Ch. 2 - A bottle falls from a blimp whose altitude is 1200...Ch. 2 - When a net force of 1 N acts on a 1-kg body, the...Ch. 2 - When a net force of 1 N acts on a 1-N body, the...Ch. 2 - A car whose mass is 1600 kg (including the driver)...Ch. 2 - A 300-g ball is struck with a bat with a force of...Ch. 2 - A bicycle and its rider together have a mass of 80...Ch. 2 - The weight of 400 g of onions is a. 0.041 N b. 0.4...Ch. 2 - A salami weighs 3 lb. Its mass is a. 0.31 kg b....Ch. 2 - An upward force of 600 N acts on a 50-kg...Ch. 2 - The upward force the rope of a hoist must exert to...Ch. 2 - The radius of the circle in which an object is...Ch. 2 - A car rounds a curve at 20 km/h. If it rounds the...Ch. 2 - A 1200-kg car whose speed is 6 m/s rounds a turn...Ch. 2 - If the earth were 3 times as far from the sun as...Ch. 2 - A woman whose mass is 60 kg on the earths surface...Ch. 2 - A man whose weight is 800 N on the earths surface...Ch. 2 - A woman standing before a cliff claps her hands,...Ch. 2 - The starter of a race stands at one end of a line...Ch. 2 - In 1977 Steve Weldon ate 91 m of spaghetti in 29...Ch. 2 - A snake is slithering toward you at 1.5 m/s. If...Ch. 2 - A woman jogs for 2 km at 8 km/h and then walks for...Ch. 2 - Three forces, each of 10 lb, act on the same...Ch. 2 - Is it correct to say that scalar quantities are...Ch. 2 - A man is rowing at 8 km/h in a river 1.5 km wide...Ch. 2 - A woman walks 70 m to an elevator and then rises...Ch. 2 - Two tugboats are towing a ship. Each exerts a...Ch. 2 - Can a rapidly moving object have the same...Ch. 2 - The acceleration of a certain moving object is...Ch. 2 - A car whose acceleration is constant reaches a...Ch. 2 - The brakes of a car are applied to give it an...Ch. 2 - A car starts from rest and reaches a speed of 40...Ch. 2 - The brakes of a car moving at 14 m/s are applied,...Ch. 2 - A car is moving at 10 m/s when it begins to be...Ch. 2 - The driver of a train moving at 20 m/s applies the...Ch. 2 - A car starts from rest and covers 400 m (very...Ch. 2 - Is it true that something dropped from rest falls...Ch. 2 - A rifle is aimed directly at a squirrel in a tree....Ch. 2 - The acceleration of gravity on the surface of...Ch. 2 - When a football is thrown, it follows a curved...Ch. 2 - A crate is dropped from an airplane flying...Ch. 2 - A stone is thrown horizontally from a cliff and...Ch. 2 - (a) Imagine that Charlotte drops a ball from a...Ch. 2 - A person in a stationary elevator drops a coin and...Ch. 2 - How fast must a ball be thrown upward to reach a...Ch. 2 - A person dives off the edge of a cliff 33 m above...Ch. 2 - A ball dropped from the roof of a building takes 4...Ch. 2 - A ball is thrown downward at 12 m/s. What is its...Ch. 2 - When will a stone thrown vertically upward at 9.8...Ch. 2 - A ball is thrown upward from the edge of a cliff...Ch. 2 - The air resistance experienced by a falling object...Ch. 2 - A ball is thrown vertically upward with an initial...Ch. 2 - A rifle is aimed directly at the bulls-eye of a...Ch. 2 - An airplane is in level flight at a speed of 100...Ch. 2 - A ball is thrown horizontally from the roof of a...Ch. 2 - A bullet is fired horizontally from a rifle at 200...Ch. 2 - An airplane whose speed is 60 m/s is flying at an...Ch. 2 - A person at the masthead of a sailboat moving at...Ch. 2 - Compare the tension in the coupling between the...Ch. 2 - In accelerating from a standing start to a speed...Ch. 2 - A 12,000-kg airplane launched by a catapult from...Ch. 2 - The brakes of a 1200-kg car exert a force of 4 kN....Ch. 2 - A force of 20 N gives an object an acceleration of...Ch. 2 - A bicycle and its rider together have a mass of 80...Ch. 2 - A 430-g soccer ball at rest on the ground is...Ch. 2 - A car and driver with a total mass of 1600 kg has...Ch. 2 - Before picking up the passengers, the driver of...Ch. 2 - Consider the statement: Sara weighs 55 kg. What is...Ch. 2 - When a force equal to its weight is applied to an...Ch. 2 - A person weighs 85 N on the surface of the moon...Ch. 2 - A mass of 8 kg and another of 12 kg are suspended...Ch. 2 - An 80-kg man slides down a rope at constant speed....Ch. 2 - How much force is needed to give a 5-kg box an...Ch. 2 - A parachutist whose total mass is 100 kg is...Ch. 2 - A person in an elevator suspends a 1-kg mass from...Ch. 2 - A person stands on a scale in an elevator. When...Ch. 2 - A 60-kg person stands on a scale in an elevator....Ch. 2 - Since the opposite forces of the third law of...Ch. 2 - What is the relationship, if any, between the...Ch. 2 - A book rests on a table. (a) What is the reaction...Ch. 2 - A car with its engine running and in forward gear...Ch. 2 - An engineer designs a propeller-driven spacecraft....Ch. 2 - Two children wish to break a string. Are they more...Ch. 2 - When a 5-kg rifle is fired, the 9-g bullet is...Ch. 2 - Where should you stand on the earths surface to...Ch. 2 - Under what circumstances, if any, can something...Ch. 2 - A person swings an iron ball in a vertical circle...Ch. 2 - A car makes a clockwise turn on a level road at...Ch. 2 - When you whirl a ball at the end of a string, the...Ch. 2 - A 40-kg crate is lying on the flat floor of a...Ch. 2 - The greatest force a level road can exert on the...Ch. 2 - Find the minimum radius at which an airplane...Ch. 2 - Some people believe that aliens from elsewhere in...Ch. 2 - The 200-g head of a golf club moves at 40 m/s in a...Ch. 2 - An airplane flying at a constant speed of 160 m/s...Ch. 2 - A track team on the moon could set new records for...Ch. 2 - If the moon were half as far from the earth as it...Ch. 2 - Compare the weight and mass of an object at the...Ch. 2 - A hole is bored to the center of the earth and a...Ch. 2 - Is the suns gravitational pull on the earth the...Ch. 2 - The centripetal force that keeps the moon in its...Ch. 2 - According to Keplers second law, the earth travels...Ch. 2 - A 2-kg mass is 1 m away from a 5-kg mass. What is...Ch. 2 - A dishonest grocer installs a 100-kg lead block...Ch. 2 - A bull and a cow elephant, each of mass 2000 kg,...Ch. 2 - An airplane makes a vertical circle in which it is...Ch. 2 - Two satellites are launched from Cape Canaveral...Ch. 2 - Is an astronaut in an orbiting spacecraft actually...Ch. 2 - With the help of the data in Table 17-1, find the...
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
- Choose the best answer. A car traveling at constant speed has a net force of zero acting on it. (a) True (b) False (c) The answer depends on the motion.arrow_forwardWhat is the deceleration of the rocket sled if it comes to rest in 1.10 s from a speed of 1000.0 km/h? (Such deceleration caused one test subject to black out and have temporary blindness.)arrow_forwardYou are riding a luxury bus. In front of you is a cup of tea resting on the seat-back tray. Which of the following events may lead to spilled tea in your lap? The bus a. remains at rest, b. moves at constant velocity, c. speeds up or d. slows down. Dont worry about other circumstances such as a person knocking your cup over. (More than one choice may be correct.) Explain your answers.arrow_forward
- Suppose that you are holding a cup of coffee in your hand. Identify all forces on the cup and the reaction to eacharrow_forwardA large crate of mass m is placed on the back of a truck but not tied down. As the truck accelerates forward with an acceleration a, the crate remains at rest relative to the truck. What force causes the crate to accelerate forward? (a) the normal force (b) the force of gravity (c) the force of friction between the crate and the floor of the truck (d) the ma force (e) none of thesearrow_forwardA 1 200-kg automobile moving at 25 m/s has the brakes applied with a deceleration of 8.0 m/s2. How far does the car travel before it stops?arrow_forward
- An aircraft catapult launches an F-22 from 0 to 180 mph in a distance 150 m. How many g’s did the pilot experience? (If more than 6 g than this catapult killed the pilot…) How long did it take to get up to speed?arrow_forwardA person weighs -800 N and is traveling downwards in an elevator whilst stood on a bathroom scale (as one does!). The person notices that the scale doesn't always read bodyweight. When arriving at the bottom, the scale reads 840 N. If the person has a mass of 81.5 kg, what is the acceleration of the elevator?arrow_forwardWhat three forces are present as a basketball is tossed upward into a hoop? push, weight, friction push, weight weight, friction push, frictionarrow_forward
- You are driving in your car and you apply a constant force to your brake pedal. Which of the following are changing? (Ignore air resistance) a) Speed b) Velocity c) Acceleration d) Speed and Velocity e) All of the abovearrow_forwardAn object is propelled along a straight-line path in space by a force. If the mass of the object somehow becomes twice as much,its acceleration A. quadruples B. halves C. doubles D. always the samearrow_forwardon aircraft carriers, catapults are used to accelerate aircraft to flight speeds in a short distance. One catapult takes a 18,000 kg jet from zero to 70 m/s in 2.5s. How far does the jet travel while it is accelerating?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Newton's Third Law of Motion: Action and Reaction; Author: Professor Dave explains;https://www.youtube.com/watch?v=y61_VPKH2B4;License: Standard YouTube License, CC-BY