Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Textbook Question
Chapter 3, Problem 20RQ
If two objects of the same size fall through air at different speeds, which encounters the greater air drag?
Expert Solution & Answer
To determine
The object that encounters greater air drag when two objects fall through air at different speeds.
Answer to Problem 20RQ
The object which encounters greater air drag is the object that falls with a greater speed.
Explanation of Solution
The maximum achievable velocity that a body can achieve in a free-fall condition is termed as its terminal velocity. This condition occurs when the downward force due to the gravity and the sum of drag and buoyancy force is balanced.
The air drag will be higher if the body is moving with a higher velocity, depending on its constant mass. Hence, when two objects having the same size is freely falling through the air at a different speed, then the object falling at higher speed will encounter greater air drag.
Conclusion:
Therefore, the object which encounters greater air drag is the one which falls with a greater speed.
Chapter 3 Solutions
Conceptual Physical Science Explorations
Ch. 3 - Distinguish between velocity and acceleration.Ch. 3 - When are you aware of motion in a moving...Ch. 3 - What is the acceleration of free fall?Ch. 3 - Is acceleration proportional to net force or does...Ch. 3 - What relationship does mass have to inertiaCh. 3 - What relationship does mass have to weight?Ch. 3 - Fill in the blanks: Shake something to and fro and...Ch. 3 - What is the weight of a brick?Ch. 3 - Is acceleration directly proportional to mass, or...Ch. 3 - Prob. 10RQ
Ch. 3 - If the mass of a sliding block is somehow tripled...Ch. 3 - Suppose you exert a horizontal push on a crate...Ch. 3 - As you increase your push, will friction on the...Ch. 3 - Once the crate is sliding, how hard do you push to...Ch. 3 - What is meant by free fall?Ch. 3 - Why doesnt a heavy object accelerate more than a...Ch. 3 - The ratio of circumference/diameter for all...Ch. 3 - What two principal factors affect the force of air...Ch. 3 - What is the acceleration of a falling object when...Ch. 3 - If two objects of the same size fall through air...Ch. 3 - Calculate the acceleration of a ball rolling down...Ch. 3 - Calculate the acceleration of a bike that goes...Ch. 3 - Calculate the acceleration of a crate of softball...Ch. 3 - Calculate the acceleration of a , single-engine...Ch. 3 - Compare from greatest to least, the accelerations...Ch. 3 - Boxes of chocolates of various masses on a...Ch. 3 - Compare from greatest to least the accelerations...Ch. 3 - What is the net force on a bright red Mercedes...Ch. 3 - On a long alley a bowling ball slows down as it...Ch. 3 - In the orbiting space shuttle you are handed two...Ch. 3 - In the orbiting space shuttle you are handed two...Ch. 3 - What happens to your weight when you mass...Ch. 3 - When a junked car is crushed into a compact cube,...Ch. 3 - What is the net force on a apple when you hold it...Ch. 3 - On which of these hills does the ball roll down...Ch. 3 - Prob. 9TECh. 3 - A bear that weights grasps a vertical tree and...Ch. 3 - Prob. 11TECh. 3 - What is the acceleration of a ball at the top of...Ch. 3 - Aristotle claimed the speed of a falling object...Ch. 3 - Two pumpkins are dropped from a high building...Ch. 3 - In a vacuum, a coin and a feather fall equally,...Ch. 3 - How does the force of gravity on a raindrop...Ch. 3 - Upon which will air drag be greater; a sheet of...Ch. 3 - Why is it that a cat that accidentally falls from...Ch. 3 - How does the terminal speed of a parachutist...Ch. 3 - How does the gravitational force on a falling body...Ch. 3 - One pound is the same as 4.45 newtons. What is the...Ch. 3 - Consider a 40-kg block of cement when pulled...Ch. 3 - Consider a mass of 1kg accelerated 1m/s2 by a...Ch. 3 - Consider a jumbo jet of mass 30,000kg in takeoff...Ch. 3 - Leroy, who has a mass of is skateboarding at when...Ch. 3 - Consider a ball that picks up a speed of 2m/s....Ch. 3 - When the ball rolls down the inclined plane in the...Ch. 3 - An object in free fall undergoes an increase in...Ch. 3 - An object with a huge mass also must have a huge...Ch. 3 - If gravity between Sun and Earth suddenly...Ch. 3 - A heavy rock and a light rock in free fall have...Ch. 3 - When a falling object encounters of air...Ch. 3 - The amount of air resistance on a 0.8-N flying...Ch. 3 - If you drop at the same time a regular soccer ball...Ch. 3 - The scientist who found the connection between...
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