Conceptual Physics: The High School Physics Program
Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
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Chapter 7, Problem 3A

When you walk on a floor, what pushes you along?

Expert Solution & Answer
Check Mark
To determine

The force that pushes a person along when that person walk on a floor.

Answer to Problem 3A

The equal and opposite force exerted by the floor onto the person helps him in moving along.

Explanation of Solution

Introduction:

According to Newton’s third law of motion, for every force exerted there is an equal and opposite reaction.

When a person walks on a floor, the force is exerted by his foot on the floor. Now, as per Newton’s third law of motion, the force will then be exerted by the floor to his foot which pushes him along the floor.

Conclusion:

The reaction force exerted by the floor on the foot of the person pushes him forward.

Chapter 7 Solutions

Conceptual Physics: The High School Physics Program

Ch. 7 - How does a helicopter get its lifting force?Ch. 7 - True or false: When a net force is exerted on a...Ch. 7 - When can two kicks on a soccer ball produce a net...Ch. 7 - Prob. 14ACh. 7 - Referring to Figure 7.14, how many horizontal...Ch. 7 - How many horizontal forces are exerted on the...Ch. 7 - How many horizontal forces are exerted on the...Ch. 7 - If you hit a wall with a force of 200 N, how much...Ch. 7 - Can you physically touch another person without...Ch. 7 - Fill in the blanks: Newtons first law is often...Ch. 7 - Three sets of double boxes rest on a table. Rank...Ch. 7 - A van exerts a force on trailers of different...Ch. 7 - Each of these boxes is pulled by the same force F...Ch. 7 - Prob. 24ACh. 7 - Your weight is the result of the gravitational...Ch. 7 - Why can you exert greater force on the pedals of a...Ch. 7 - Consider the two forces acting on a person who...Ch. 7 - If you walk on a log that is floating in the...Ch. 7 - Why is it easier to walk on a carpeted floor than...Ch. 7 - If you step off a ledge, you accelerate noticeably...Ch. 7 - When a racquet hits a tennis ball, action and...Ch. 7 - Suppose you're weighing yourself while standing...Ch. 7 - When a high jumper leaves the ground, what is the...Ch. 7 - What is the reaction force to an action force of...Ch. 7 - If action equals reaction, why isnt Earth pulled...Ch. 7 - A small car bumps into a van at rest in a parking...Ch. 7 - Does your answer to question 36 depend on the...Ch. 7 - A speeding bus makes contact with a bug that...Ch. 7 - Consider two carts, one twice as massive as the...Ch. 7 - Some people used to think that a rocket could not...Ch. 7 - Since the force that acts on a cannonball when a...Ch. 7 - Suppose you exert 200 N on your refrigerator and...Ch. 7 - The photo shows Steve Hewitt and his daughter...Ch. 7 - Hold your hand like a flat wing outside the window...Ch. 7 - Your teacher challenges you and your best friend...Ch. 7 - A pair of 50-N weights are attached to a spring...Ch. 7 - The strong man can withstand the tension force...Ch. 7 - A balloon floats motionless in the air. A...Ch. 7 - When you get up from a sitting position, do your...Ch. 7 - When a weightlifter jerks a barbell over his head,...Ch. 7 - Identify two pairs of action-reaction forces that...Ch. 7 - A car of mass m cruises along the highway at a...Ch. 7 - What will be the acceleration of recoil when a...Ch. 7 - Two people attempt a tug-of-war on low-friction...Ch. 7 - Two blocks, one three times as massive as the...Ch. 7 - What is the net force on a falling 100-N barrel...Ch. 7 - Amanda looks at a 1.0-kg bag of jellybeans resting...Ch. 7 - When 56-kg Diane on rollerskates pushes against a...Ch. 7 - A 7.00-kg bowling ball moving at 8.0 m/s strikes a...Ch. 7 - A 70-kg skydiver is falling at her terminal speed....Ch. 7 - Gymnast Gracie of weight mg is suspended by a pair...
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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