Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 4, Problem 28TIS
(a) Why is it a good idea to have your hand extended forward when you are getting ready to catch a fast-moving baseball with your bare hand? (b) In boxing, why is it advantageous to roll with the punch? (c) In karate, why is it advantageous to apply a force for a very brief time?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
To move two crates, two people push on them with the same force for the same amount of
time. One of the crates has double the mass of the other one. If friction can be ignored, which
crate will acquire the greatest momentum (the lighter one or the heavier one) or will they both
acquire the same momentum? Also, which crate will acquire the greatest kinetic energy or will
they both acquire the same kinetic energy?
The third question: A person wanted to push a block made of steel with a mass of 800 kg to the top of a sloping bridge made of the same material, and it would rise by 10 meters every 40 meters with an acceleration of 0.66 meters / sec, as shown in the figure. What is the amount of momentum that a person must provide in order to be able to push the mold in the case of first: neglecting the presence of friction Second: not neglecting the presence of friction
A shopper in a supermarket pushes a loaded cart with a horizontal force of 10 N. The cart has a mass of 30 kg. (a) Ignoring friction, how far will it move in 3 s, starting from rest? (b) How far will it move in 3 s if the shopper places his 30 N child in the cart before he begins to push it?
Chapter 4 Solutions
Conceptual Integrated Science
Ch. 4 - Which has a greater momentum-a heavy truck at rest...Ch. 4 - How can a huge ship have an enormous momentum when...Ch. 4 - How does impulse differ from force?Ch. 4 - What are the two ways in which the impulse exerted...Ch. 4 - For the same force, which cannon imparts the...Ch. 4 - Consider a baseball that is caught and thrown at...Ch. 4 - In the preceding question, which case requires the...Ch. 4 - Can you produce a net impulse on an automobile by...Ch. 4 - What does it mean to say that a quantity is...Ch. 4 - Distinguish between an elastic collision and an...
Ch. 4 - Railroad car A rolls at a certain speed and...Ch. 4 - If the equally massive cars of the preceding...Ch. 4 - When is energy most evident?Ch. 4 - What do we call the quantity force distance, and...Ch. 4 - In what units are work and energy measured?Ch. 4 - True or false: One watt is the unit of power...Ch. 4 - How many watts of power are expended when a force...Ch. 4 - A car is lifted a certain distance in a service...Ch. 4 - Two cars, one twice as heavy as the other, are...Ch. 4 - When a car travels at 50 km/h, it has kinetic...Ch. 4 - What is the evidence for saying whether or not...Ch. 4 - The brakes do a certain amount of work to stop a...Ch. 4 - Cite the law of energy conservation.Ch. 4 - What is the source of energy that powers a...Ch. 4 - Can a machine multiply input force? Input...Ch. 4 - A force of 50 N applied to the end of a lever...Ch. 4 - Is it possible to design a machine that has an...Ch. 4 - a Why is it a good idea to have your hand extended...Ch. 4 - In Figure 4.8, how does the force that Cassy...Ch. 4 - How will the impulse differ if Cassys hand bounces...Ch. 4 - We know that falling on a mat is preferable to...Ch. 4 - In terms of the impulse-momentum relationship,...Ch. 4 - The word burn is often used to describe the...Ch. 4 - In what sense are you powered by solar energy?Ch. 4 - Calculate the momentum of a 10-kg bowling ball...Ch. 4 - Show that the momentum of a 50-kg carton that...Ch. 4 - Calculate the impulse that occurs when an average...Ch. 4 - Show that an impulse of 100 Ns occurs when the...Ch. 4 - Calculate the work done when a force of 2 N moves...Ch. 4 - Show that 45 J of work is done when a 15-N force...Ch. 4 - Calculate the watts of power expended when a force...Ch. 4 - Show that 140 W of power is expended when a 20-N...Ch. 4 - How much PE does a 1.5 kg book gain when lifted 2...Ch. 4 - Show that there is a 600-J increase in potential...Ch. 4 - Calculate the KE of a 1-kg parrot flying at 6 m/s.Ch. 4 - Show that the KE of a 3-kg dog running at 4 m/s is...Ch. 4 - How much work is required to increase the kinetic...Ch. 4 - Show that a 50-J change in kinetic energy occurs...Ch. 4 - The mass and speed of three vehicles, A, B and C,...Ch. 4 - The roller coaster stats from rest at point A....Ch. 4 - Rank the scale readings from greatest to least...Ch. 4 - A car with a mass of 1000kgmoves at 20m/s. Show...Ch. 4 - A railroad diesel engine weighs four times as much...Ch. 4 - A 5kg fish swimming at 1m/s swallows an absent...Ch. 4 - What would be the speed of the larger fish if the...Ch. 4 - Jeannie Beanie mass 40kg, standing on a slippery...Ch. 4 - Consider the inelastic collision between the two...Ch. 4 - This question is typical on some drivers licence...Ch. 4 - In the hydraulic machine shown, it is observed...Ch. 4 - Consider a car with 25% efficient engine that and...Ch. 4 - When a cyclist expends 1000W of power to deliver...Ch. 4 - The decrease in PE of a freely falling object...Ch. 4 - A Mars vehicle is tested on Earth at a speed of...Ch. 4 - How can the momentum of a speeding bullet be the...Ch. 4 - Distinguish between force and impulse. .Ch. 4 - What are the two ways to increase or decrease...Ch. 4 - Why are automobiles designed to crumple upon...Ch. 4 - Why might a glass wine survive a fall onto a...Ch. 4 - If you throw an egg against a wall, the egg will...Ch. 4 - Railroad cars are loosely coupled so that there is...Ch. 4 - When a cannon with a long barrel is fired, the...Ch. 4 - Why does Howies block Figure 4.3 topple when the...Ch. 4 - You are on small raft next to a dock, and you jump...Ch. 4 - When travelling in your car at highway speed, the...Ch. 4 - Freddy Frog drops vertically from a tree onto a...Ch. 4 - Prob. 81TECh. 4 - Can something have energy without having momentum?...Ch. 4 - Which requires more work: stretching a strong...Ch. 4 - Why do you run out of breath when running up the...Ch. 4 - Distinguish between work and power.Ch. 4 - Relative to the floor in a library, books on the...Ch. 4 - If 300 joules is required to lift an object to a...Ch. 4 - When the velocity of an object is doubled, by what...Ch. 4 - You and a flight attended tosses a ball back and...Ch. 4 - A child can throw a baseball at 20 mph. Some...Ch. 4 - Prob. 91TECh. 4 - When a cannon with a long barrel is fired, the...Ch. 4 - Consider a pendulum swinging to and fro. At what...Ch. 4 - A physics instructor demonstrates energy...Ch. 4 - An apple hanging from a limb has potential energy...Ch. 4 - In an effort to combat wasteful habits, we often...Ch. 4 - Why bother using a machine if it cannot multiply...Ch. 4 - In the ideal pulley system shown, Block A has mass...Ch. 4 - Why is a punch more powerful with a bare fist than...Ch. 4 - A boxer can punch a heavy bag for more than an...Ch. 4 - A fully dressed person is at rest in the middle of...Ch. 4 - Why is it difficult for a firefighter to hold a...Ch. 4 - If a Mack truck and Honda Civic have a head-on...Ch. 4 - If an automobile has an engine that was 100%...Ch. 4 - Discuss the design of the roller coaster shown in...Ch. 4 - Consider the identical balls released from rest on...Ch. 4 - Consider the swinging balls apparatus shown. If...Ch. 4 - A freight train rolls along a track with...Ch. 4 - If Fast Freda doubles her running speed, she also...Ch. 4 - A big fish swims upon and swallows a small fish at...Ch. 4 - Which of these equations best illustrates the...Ch. 4 - Which of these equations is best for calculating...Ch. 4 - The power required to raise a 100-kg crate a...Ch. 4 - A model car with three times as much speed as...Ch. 4 - Nellie lifts a 100-N crate with an ideal pulley...Ch. 4 - When 100 J are put into a device that puts out 40...Ch. 4 - A simple machine CANNOT multiply a force. b...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Three students discuss the final momentum and kinetic energy of each cart. Student 1: "Since the same force is ...
Tutorials in Introductory Physics
52. You are target shooting using a toy gun that fires a small ball at a speed of 15 m/s. When the gun is fire...
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
17.117 Careful measurements show that the specific heat of the solid phase depends on temperature (Fig. P17.117...
University Physics with Modern Physics (14th Edition)
5. For a projectile, which of the following quantities are constant during the flight: x, y, Vx, Vy, V, ax, ay?...
College Physics: A Strategic Approach (4th Edition)
The radiation that we observe as the cosmic microwave background started out largely as infrared. Why is it now...
Essential University Physics (3rd Edition)
A violin string playing the note A oscillates at 440 Hz. Whats its oscillation period?
Essential University Physics: Volume 1 (3rd 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
- Describe a system for which momentum is conserved but mechanical energy is not. Now the reverse: Describe a system for which kinetic energy is conserved but momentum is not.arrow_forwardA massive tractor is rolling down a country road. In a perfectly inelastic collision, a small sports car runs into the machine from behind. (i) Which vehicle experiences a change in momentum of larger magnitude? (a) The car does. (b) The tractor does. (c) Their momentum changes are the same size. (d) It could be either vehicle. (ii) Which vehicle experiences a larger change in kinetic energy? (a) The car does. (b) The tractor does. (c) Their kinetic energy changes are the same size. (d) It could be either vehicle.arrow_forwardAn 6 kg object sits at 3 m, a 4 kg object sits at 6 m. Where should a 10 kg object be placed so that the center of mass is at 7.5 m? 10.8 m 5.50 m 2.10 m 5.85 m 13.5 marrow_forward
- While Lost-a-Lot ponders his next move in the situation described and illustrated as shown, the enemy attacks! An incoming projectile breaks off the stone ledge so that the end of the drawbridge can be lowered past the wall where it usually rests. In addition, a fragment of the projectile bounces up and cuts the drawbridge cable! The hinge between the castle wall and the bridge is frictionless, and the bridge swings down freely until it is vertical and smacks into the vertical castle wall below the castle entrance. (a) How long does Lost-a-Lot stay in contact with the bridge while it swings downward? (b) Find the angular acceleration of the bridge just as it starts to move. (c) Find the angular speed of the bridge when it strikes the wall below the hinge. Find the force exerted by the hinge on the bridge (d) immediately after the cable breaks and (e) immediately before it strikes the castle wall.arrow_forwardI need help with this.arrow_forwardTwo stationary hockey players push each other so that they move in opposite directions. One player has a mass 38.7 kg and a speed of 2.8 m/s. What is the mass of the other player if her speed is 3.8 m/s ? Neglect friction.arrow_forward
- A railway car is at rest on a frictionless track. A man at one end of the car walks to the other end.(a) Does the car move while he is walking? (b) If so, in which direction? (c) What happens when the man comes to a stop?arrow_forwardA bowler holds a bowling ball (M = 6.9 kg) in the palm of his hand (see the figure below). His upper arm is vertical, his lower arm (2.1 kg) is horizontal. Biceps Elbow contact point Lower arm (forearm plus hand) center +4.0 am 15 cm - -33 cm- of mass (a) What is the magnitude of the force of the biceps muscle on the lower arm? N (b) What is the magnitude of the force between the bony structures at the elbow contact point?arrow_forwardAn unfortunate astronaut loses his grip during a spacewalk and finds himself floating away from the space station, carrying only a rope and a bag of tools. First, he tries to throw a rope at his fellow astronaut, but the rope is too short. In a last-ditch effort, the astronaut throws his bag of tools in the direction of his motion, away from the space station. The astronaut has a mass of ma=113 kg and the bag of tools has a mass of .mb=13.0 kg. If the astronaut is moving away from the space station at vi=1.20 m/s initially, what is the minimum final speed ?b,f of the bag of tools with respect to the space station that will keep the astronaut from drifting away forever? calculate vb,f in m/sarrow_forward
- An unfortunate astronaut loses his grip during a spacewalk and finds himself floating away from the space station, carrying only a rope and a bag of tools. First he tries to throw a rope to his fellow astronaut, but the rope is too short. In a last ditch effort, the astronaut throws his bag of tools in the direction of his motion, away from the space station. The astronaut has a mass of m, = 113 kg and the bag of tools has a mass of m, = 13.0 kg. If the astronaut is moving away from the space station at v; = 1.80 m/s initially, what is the minimum final speed vof of the bag of tools with respect to the space station that will keep the astronaut from drifting away forever? Upf = m/sarrow_forwardLook at the following arrangement. At an airport, M kg of luggage is unloaded from a plane into the 3 carts of a luggage carrier. One-third of the mass goes into the first cart. As the engine pulls away, the carts accelerate because there is negligible friction between the cart wheels and the horizontal floor. The coupling cables between the engine and the first cart and between the carts all have negligible mass. Suddenly, one-sixth of the total mass M falls out of the second cart. The driver does not notice this and maintains the pulling force by the engine. a) What is the ratio of the tension in the second coupling bar to that in the first coupling bar before the luggage falls out of the second cart? b) What is the ratio of the new (=after the luggage falls out) tensions to the old (=before the luggage falls out) tensions in each coupling cable? (3) O 772 [ 1/3 M 0 ENGINEarrow_forwardThe firing of a bullet by a rifle causes the rifle to recoil backwards. The speed of the rifle's recoil is smaller than the bullet's forward speed because the a momentum of the rifle is unchanged speed is mainly concentrated in the bullet force against the rifle is relatively small d none of these e rifle has lots of massarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
- Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill
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
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Work and Energy - Physics 101 / AP Physics 1 Review with Dianna Cowern; Author: Physics Girl;https://www.youtube.com/watch?v=rKwK06stPS8;License: Standard YouTube License, CC-BY