College Physics (10th Edition)
10th Edition
ISBN: 9780321902788
Author: Hugh D. Young, Philip W. Adams, Raymond Joseph Chastain
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 4, Problem 11CQ
If you drop a 10 lb rock and a 10 lb pillow from the same height with no air resistance, which one is moving faster when they reach the ground? So why would you rather be hit by the pillow than the rock?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A large rock is dropped from rest from the edge of a cliff that is 20 m above the surface of the ocean. How long does it take for the rock to hit the water? (Ignore air resistance and assume g=10 m/s2)
20 If you drop a rock from a great height, about how fast will it be falling after 5 seconds, neglecting air resistance?
A
B
с
D
E
It depends on how heavy it is.
It depends on what shape it is.
10 m/s
15 m/s
50 m/s
You throw a baseball straight upward with speed v0. When the ball returns to the point from where you threw it, how does its speed compare to v0 (a) in the absence of air resistance and (b) in the presence of air resistance? Explain.
Chapter 4 Solutions
College Physics (10th Edition)
Ch. 4 - When a car accelerates starting from rest, where...Ch. 4 - If you step hard on the accelerator of your car....Ch. 4 - A passenger in a bus notices that a ball which has...Ch. 4 - It you hit the sidewalk with a hammer, the hammer...Ch. 4 - In a head-on collision between a compact hybrid...Ch. 4 - It would be much easier to lift a bowling ball on...Ch. 4 - A box of mass m1 is stacked on top of a second box...Ch. 4 - If your hands are wet and no towel is handy, you...Ch. 4 - It is possible to play catch with a softball in an...Ch. 4 - Newtons third law tells us that if you push a box...
Ch. 4 - If you drop a 10 lb rock and a 10 lb pillow from...Ch. 4 - Which feels a greater pull due to gravity, a heavy...Ch. 4 - When youre driving on the freeway its necessary to...Ch. 4 - The accelerations due to gravity near the surfaces...Ch. 4 - A golfer tees off and hits the ball with a mighty...Ch. 4 - Three books are at rest on a horizontal table, as...Ch. 4 - A rocket firing its engine and accelerating in...Ch. 4 - A person pushes horizontally with constant force P...Ch. 4 - Suppose the sun. including its gravity, suddenly...Ch. 4 - Three weights hang by very light wires as shown in...Ch. 4 - A woman normally weighs 125 lb. If she is standing...Ch. 4 - A worker pushes horizontally on a 2000 N...Ch. 4 - Far from any gravity, an astronaut accidentally...Ch. 4 - A worker pulls horizontally on a crate on a rough...Ch. 4 - A person pushes two Poxes with a horizontal 100 N...Ch. 4 - | A warehouse worker pushes a crate along the...Ch. 4 - | Two dogs pull horizontally on ropes attached to...Ch. 4 - | A man is dragging a trunk up the loading ramp of...Ch. 4 - | BIO Jaw injury. Due to a jaw injury, a patient...Ch. 4 - | Workmen are trying to free an SUV stuck in the...Ch. 4 - A box rests. on a frozen pond, which serves as a...Ch. 4 - | In outer space, a constant force is applied to a...Ch. 4 - || A 68.5 kg skater Moving initially at 2.40 m/s...Ch. 4 - BIO Animal dynamics. An adult 68 kg cheetah can...Ch. 4 - || A 2 kg block sits at rest on a frictionless...Ch. 4 - A dock worker applies a constant horizontal force...Ch. 4 - | (a) What is the mass of a book that weighs 320 N...Ch. 4 - Superman throws a 2400 N boulder at an adversary....Ch. 4 - | BIO (a) How many newtons does a 150 lb person...Ch. 4 - | BIO(a) An ordinary flea has a mass of 210 g. How...Ch. 4 - | BIO Calculate the mass (in SI units) of (a) a...Ch. 4 - || A standard bathroom scale is placed on an...Ch. 4 - || At the surface of Jupiters moon lo, the...Ch. 4 - || A scientific instrument that weighs 85.2 N on...Ch. 4 - || Planet X! When venturing forth on Planet X, you...Ch. 4 - | You drag a heavy box along a rough horizontal...Ch. 4 - || A person pushes two boxes with a horizontal...Ch. 4 - | The upward normal force exerted by the floor is...Ch. 4 - | A person throws a 2.5 lb stone into the air with...Ch. 4 - | A tennis ball traveling horizontally at 22 m/s...Ch. 4 - || Two crates, A and S, sit at rest side by side...Ch. 4 - || A ball is hanging from a long string that is...Ch. 4 - | A person drags her 65 N suitcase along the rough...Ch. 4 - || A factory worker pushes horizontally on a 250 N...Ch. 4 - || A dock worker pulls two boxes connected by a...Ch. 4 - || A hospital order y pushes horizontally on two...Ch. 4 - | A uniform 25.0 kg chain 2.00 m long supports a...Ch. 4 - | A 60 kg circus performer is climbing up a rope...Ch. 4 - | A 275 N bucket is lifted with an acceleration of...Ch. 4 - || BIO Human biomechanics. World-class sprinters...Ch. 4 - || A chair of mass 12.0 kg is sitting on the...Ch. 4 - || BIO Human biomechanics. The fastest pitched...Ch. 4 - || You walk into an elevator, step onto a scale,...Ch. 4 - || A woman is standing in an elevator holding her...Ch. 4 - || An advertisement claims that a particular...Ch. 4 - || A rifle shoots a 4.20 g bullet out of its...Ch. 4 - || A parachutist relies on air resistance (mainly...Ch. 4 - As shown in Figure 4.40, force vector F1 always...Ch. 4 - || A spacecraft descends vertically near the...Ch. 4 - || BIO A standing vertical Jump, NFL player Gerald...Ch. 4 - || You leave the doctors office after your annual...Ch. 4 - || BIO Human biomechanics. The fastest served...Ch. 4 - || Extraterrestrial physics. You have landed on an...Ch. 4 - || Jumping to the ground. A 75.0 kg man steps off...Ch. 4 - BIO Forces on a dancers body. Dancers experience...Ch. 4 - BIO Forces on a dancers body. Dancers experience...Ch. 4 - BIO Forces on a dancers body. Dancers experience...Ch. 4 - BIO Forces on a dancers body. Dancers experience...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Explain all answers clearly, with complete sentences and proper essay structure if needed. An asterisk (*) desi...
Cosmic Perspective Fundamentals
5.43 A stone with mass 0.80 kg is attached to one end of a string 0.90 m long. The string will break if its ten...
University Physics (14th Edition)
3. What is free-fall, and why does it make you weightless? Briefly describe why astronauts are weightless in th...
The Cosmic Perspective
The rate at which information can be transmitted on an electromagnetic wave is proportional to the frequency of...
College Physics
82. How do chemical sediments produce rock? Name two rock types that form by chemical sedimentation.
Conceptual Physical Science (6th Edition)
Write the abbreviation for each quantity:
6. 138 centimetres
Applied Physics (11th 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
- An object of mass m1 hangs from a string that passes over a very light fixed pulley P1 as shown in Figure P4.68. The string connects to a second very light pulley P2. A second string passes around this pulley with one end attached to a wall and the other to an object of mass m2 on a frictionless, horizontal table, (a) If a1 and a2, are the accelerations of m1 and m2, respectively, what is the relation between these accelerations? Find expressions for (b) the tensions in the strings and (c) the accelerations a1 and a2? in terms of the masses m1 and m2. and g. Figure P4.68arrow_forwardA 1-kg ball and a 10-kg ball are dropped from a height of 10 m at the same time. In the absence of air resistance, the 10 kg ball will take 10 times the amount of time to reach the ground. the 1 kg ball will hit the ground first. the 10 kg ball will hit the ground first. the two balls will hit the ground at the same time.arrow_forwardIn the absence of air resistance, if a ball is thrown vertically upward with a certain initial speed, on returning to its original level it will have the same speed. When air resistance is a factor, will the ball be moving faster, the same, or more slowly than its throwing speed when it gets back to the same level? Why? (Physicists often use a “principle of exaggeration” to help them analyze a problem. Consider the exaggerated case of a feather, not a ball, because the effect of air resistance on the feather is more pronounced and therefore easier to visualize.)arrow_forward
- q6 A 1 kg ball and a 2 kg ball, both the same dimensions, are dropped at the same time from a height of 20 m. Ignoring air resistance, which ball hits the ground first (if any) and why?arrow_forwardA person can dive into water from a height of 10 m without injury, but a person who jumps off the roof of a 10-m-tall building and lands on a concrete street is likely to be seriously injured. Why is there a difference?arrow_forwardWhy is the stopping distance of a truck much shorter than for a train going the same speed?arrow_forward
- W4 5-7arrow_forwardYou are standing on your balcony in an apartment building. You tossed a coin straight upwards at 4 m/s. Assume the coin leaves your hand at 4 m above ground, how long will it take to strike the ground? Ignore air drag. Hint: You can set the final position to be zero.arrow_forwardThe parachute on a race car of weight 8 820 N opens at the end of a quarter-mile run when the car is traveling at 35 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1 000 m?arrow_forward
- A car traveling at 35 m/s suddenly runs out of gas while driving up a 7° incline. How long will it take for the car to stop after it runs out of gas (if it doesn't use its brakes and there is no friction)? How far will it travel before it stops?arrow_forwardIt takes 2.10 s for a small ball with a mass of 0.080 kg released from rest from a tall building to reach the ground. Calculate the height from which the ball is released, assuming that air resistance is negligiblearrow_forwardAn elevator, which weighs 8 tons with its load, is descending with a speed of 900 ft/min. Ifthe load on the cables must not exceed 14 tons, what is the shortest distance in which the elevator can be stopped?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Glencoe Physics: Principles and Problems, Student...
Physics
ISBN:9780078807213
Author:Paul W. Zitzewitz
Publisher:Glencoe/McGraw-Hill
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
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