Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 113DQ
This is a scenario common to many physics students: You push a heavy car by hand. The car, in turn, pushes back with an opposite but equal force on you. Doesn’t this mean that the forces cancel one another, making acceleration impossible? Resolve the misunderstanding underlying this question.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A stuntman drives a car with a mass of 1600 kg on a drawbridge. The car
accelerates with a constant force of 8000 N. While he is driving, the
drawbridge is raised to an incline of 30°. What is the car's new acceleration
on this incline, ignoring the force due to air resistance? (Recall that g = 9.8
m/s2)
A 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?
A 80 kg woman on roller skates pushes a 30 kg girl, also on roller skates, with a force of 100 N. The
magnitude of the force exerted by the girl on the woman is
O 200 N
O 100 N
O 50 N
O 40 N
O 38 N
zero
Chapter 2 Solutions
Conceptual Physical Science (6th Edition)
Ch. 2 - State the law of inertia.Ch. 2 - Is inertia a property of matter or a force of some...Ch. 2 - What concept was missing from people's minds in...Ch. 2 - When a bird lets go of a branch and drops to the...Ch. 2 - What kind of path would the planets follow if...Ch. 2 - State Newton's second law.Ch. 2 - Is acceleration directly or inversely proportional...Ch. 2 - Is acceleration directly or inversely proportional...Ch. 2 - If the mass of a sliding block is tripled at the...Ch. 2 - What is the net force that acts on a 10-N freely...
Ch. 2 - Why doesnt a heavy object accelerate more than a...Ch. 2 - What is the net force that acts on a 10-N falling...Ch. 2 - What two principal factors affect the force of air...Ch. 2 - What is the acceleration of a falling object that...Ch. 2 - If two objects of the same size fall through air...Ch. 2 - Why does a heavy parachutist fall faster than a...Ch. 2 - Earlier in this chapter, we treated force as a...Ch. 2 - How many forces are required for a single...Ch. 2 - When you push against a wall with your fingers,...Ch. 2 - A boxer can hit a heavy bag with great force. Why...Ch. 2 - State Newtons third law.Ch. 2 - Consider hitting a baseball with a bat. If we call...Ch. 2 - If the force that acts on a cannonball and the...Ch. 2 - Is it correct to say that action and reaction...Ch. 2 - If body A and body B are both within a system, can...Ch. 2 - In terms of forces, what is necessary to...Ch. 2 - Identify the force that propels a rocket into...Ch. 2 - How does a helicopter get its lifting force?Ch. 2 - To what law of physics do we refer when we say you...Ch. 2 - Which of Newtons laws focuses on inertia? Which on...Ch. 2 - In Chapter 1 acceleration is defined as a = vt....Ch. 2 - In this chapter we learn that the cause of...Ch. 2 - Knowing that a 1-kg object weighs 10 N. confirm...Ch. 2 - A simple rearrangement of Newton's second law...Ch. 2 - A Honda Civic hybrid weighs about 2900 pounds,...Ch. 2 - When two horizontal forces are exerted on the car...Ch. 2 - A 12-kg astronaut recedes from her spacecraft by...Ch. 2 - Madison pushes with a 160-N horizontal force on a...Ch. 2 - Sophia pushes with a 40-N horizontal force on a...Ch. 2 - A business jet of mass 30,000 kg takes off when...Ch. 2 - A rocket of mass 100,000 kg undergoes an...Ch. 2 - Calculate the horizontal force that must be...Ch. 2 - Leroy, who has a mass of 100 kg, is skateboarding...Ch. 2 - For 3.0 s, Allison exerts a net force of 10.0 N on...Ch. 2 - The heavyweight boxing champion of the world...Ch. 2 - Suzie Skydiver with her parachute has a mass of 50...Ch. 2 - If you stand next to a wall on a frictionless...Ch. 2 - A force Facts in the forward direction on a cart...Ch. 2 - A firefighter of mass 80 leg slides down a...Ch. 2 - A rock bands tour bus, mass M, is accelerating...Ch. 2 - Boxes of various masses are on a friction-free...Ch. 2 - In cases A, B, and C, the crate is in equilibrium...Ch. 2 - Consider a 100-kg box of tools in the locations A,...Ch. 2 - Three parachutists, A, B, and C, have reached...Ch. 2 - The strong man is pulled in the three situations...Ch. 2 - The Moon travels in a nearly circular path around...Ch. 2 - To pull a wagon across a lawn at constant...Ch. 2 - Your empty hand is not hurt when it bangs lightly...Ch. 2 - Why is a massive cleaver more effective for...Ch. 2 - Aristotle claimed that the speed of a falling...Ch. 2 - What is the net force acting on a 1-kg ball in...Ch. 2 - As you leap upward from the ground, how does the...Ch. 2 - "It's not the fall that hurts you; it's the sudden...Ch. 2 - For each of the following interactions, identify...Ch. 2 - You hold an apple over your head. (a) Identify all...Ch. 2 - What is the net force on an apple that weighs 1 N...Ch. 2 - Why does a cat that falls from the top of a...Ch. 2 - Free fall is motion in which gravity is the only...Ch. 2 - How does the weight of a falling body compare with...Ch. 2 - You tell your friend that the acceleration of a...Ch. 2 - We know that Earth pulls on the Moon. Does it...Ch. 2 - A friend says that Al cannot push on the tree...Ch. 2 - Why can a boxer hit a heavy opponent harder for...Ch. 2 - When you stand on a floor, does the floor exert an...Ch. 2 - Why can you exert greater force on the pedals of a...Ch. 2 - The strong man will push apart the two initially...Ch. 2 - Suppose two carts, one twice as massive as the...Ch. 2 - Two 100-N weights are attached to a spring scale...Ch. 2 - Prob. 83ECh. 2 - When the athlete holds the barbell overhead, the...Ch. 2 - Consider the two forces acting on the person who...Ch. 2 - If a Mack truck and a motorcycle have a head-on...Ch. 2 - Two people of equal mass attempt a tug-of-war with...Ch. 2 - Suppose that one of the people in Exercise 87 has...Ch. 2 - Which team wins in a tug-of-war: the team that...Ch. 2 - The photo shows Steve Hewitt and his daughter...Ch. 2 - When your car moves along the highway at constant...Ch. 2 - The auto in the sketch moves forward as the brakes...Ch. 2 - A racing car travels along a straight raceway at a...Ch. 2 - If it were not for air resistance, would it be...Ch. 2 - When you toss a coin upward, what happens to its...Ch. 2 - Discuss whether or not a stick of dynamite...Ch. 2 - In an orbiting space craft, you are handed two...Ch. 2 - Each of the vertebrae forming your spine is...Ch. 2 - Before the time of Galileo and Newton, many...Ch. 2 - The opening photo in this chapter shows a favorite...Ch. 2 - Consider a ball at rest in the middle of a toy...Ch. 2 - If youre in a car at rest that gets hit from...Ch. 2 - Why do you lurch forward in a bus that suddenly...Ch. 2 - Suppose that youre in a moving car and the engine...Ch. 2 - A rocket becomes progressively easier to...Ch. 2 - If you drop an object, its acceleration toward the...Ch. 2 - Can you think of a reason why the acceleration of...Ch. 2 - You throw a ball straight upward. Compared with...Ch. 2 - A couple of your friends say that before a falling...Ch. 2 - How does the terminal speed of a parachutist...Ch. 2 - How does the gravitational force on a falling body...Ch. 2 - If and when Galileo dropped two balls from the top...Ch. 2 - This is a scenario common to many physics...Ch. 2 - A fanner urges his horse to pull a wagon. The...Ch. 2 - When Marie exerts a horizontal force of 200 N to...Ch. 2 - Two equal-mass blocks are connected by a length of...Ch. 2 - The bricks in this road were originally straight....Ch. 2 - Ken and Joanne are astronauts floating some...Ch. 2 - Can a clog wag its tail without the tail in turn...Ch. 2 - If you simultaneously drop a pair of tennis balls...Ch. 2 - If gravity between the Sun and Earth suddenly...Ch. 2 - A ball rolls down a curved ramp as shown. As its...Ch. 2 - A block of ice sliding without friction down an...Ch. 2 - The reason why a 10-kg rocks falls no faster than...Ch. 2 - As mass is added to a cart pushed by a constant...Ch. 2 - The amount of air resistance that acts on a...Ch. 2 - You drop a pillow off the edge of the...Ch. 2 - Alex pulls on the end of a spring attached to a...Ch. 2 - The amount of force with which a boxers punch...Ch. 2 - The force that propels a rocket is provided by (a)...
Additional Science Textbook Solutions
Find more solutions based on key concepts
The speed of the person sitting on the chair relative to the chair and relative to Earth.
Conceptual Physics (12th Edition)
Work and Power in Cycling
When you ride a bicycle at constant speed, almost all of the energy you expend goes i...
College Physics: A Strategic Approach (4th Edition)
A slab of thickness D, whose two faces are parallel, has index of refraction n. A ray of light incident from ai...
Physics for Scientists and Engineers with Modern Physics
Choose the best answer to each of the following. Explain your reasoning. When the ultraviolet light from hot st...
Cosmic Perspective Fundamentals
At a given distance, far from the heart compared with its size, the electric field a. is weaker along an extens...
Essential University Physics: Volume 2 (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
- A black widow spider hangs motionless from a web that extends vertically from the ceiling above. If the spider has a mass of 1.5 g, what is the tension in the web?arrow_forwardA certain cable of an elevator is designed to exert a force of 4.5 × 10^4 N. If the maximum acceleration that a loaded car can withstand is 3.5 m/s2, what is the combined mass of the car and its contents?arrow_forwardYou are going sledding with your friends, sliding down a snowy hill. Friction can’t be ignored. Riding solo on your sled, you have a certain acceleration. Would the acceleration change if you let a friend ride with you, increasing the mass? Explain.arrow_forward
- What if we have air resistance in the environment? Will there be any differences? Justify your answer by using Newton’s 2nd Law.arrow_forwardConsider a person standing on a scale in an elevator. If the elevator accelerates upwards with an acceleration of 1.27 m/s2 and the person has a mass of 79.2 kg, what would the scale read? HINT: you need to take into account the acceleration due to gravity, as well as that of the elevator.arrow_forwardAircraft carriers use catapults to launch jets from their deck. One such catapult accelerates a 18,300 kg aircraft from rest to 72 m/s in 3.1 s. What is the magnitude of the force (in N) required to do this?arrow_forward
- A freight train has a mass of 1.5 × 107 kg. If the locomotive can exert a constant pull of 7.5 × 105 N, how long does it take to increase the speed of the train from rest to 80 km/h?arrow_forwardA pedestrian with a mass of 80 kg accelerates at 0.27 m/s² to the east. A high wind comes up, blowing toward the west. The wind is capable of giving the pedestrian an acceleration of 0.01 m/s²2. What is the net force acting on the pedestrian in the eastern direction? (Round your answer to 2 decimal places, DO NOT include units)arrow_forwardJig's car has a mass of 1000 kg and is out of gas. He is trying to push a car to a gas station and he makes the car go 0.05 m/s^2. How much force is Jig applying to his car? (A) 100 N в) 50 N с) 5N D) 20 Narrow_forward
- Two people are pushing a truck across a parking lot. The truck has a mass of about 2 × 103 kg. First, they take turns pushing. When Person A pushes the truck, the truck accelerates at a rate of 1 m/s2. When Person B pushes the truck, it accelerates at a rate of 2 m/s?. (a) Both people stand behind the truck and push in the same direction. What is the net force on the truck? At what rate will the truck accelerate? (b) Person A stands at the back of the truck and Person B stands at the front, and they push in opposite directions. What is the net force on the truck? At what rate will the truck accelerate? In what direction? For both (a) and (b), draw a picture indicating the forces applied by A and B as well as the motion of the truck.arrow_forwardA 9000-N automobile is pushed along a level road by four students who apply a total forward force of 500 N. Neglecting friction, the acceleration of the automobile is: (A 0.54 m/s? B 9.8 m/s? 18 m/s? D 1.8 m/s?arrow_forwardA child is walking along the sidewalk at a constant speed of 1 m/s while pulling his dog sitting in a wagon. The dog has a mass of 30 kg and the wagon weighs 50 N. If the child pulls the wagon with a force of 60 N at an angle of 30°, what is the frictional force exerted by the wagon on the dog?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author: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: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Newton's First Law of Motion: Mass and Inertia; Author: Professor Dave explains;https://www.youtube.com/watch?v=1XSyyjcEHo0;License: Standard YouTube License, CC-BY