COLLEGE PHYSICS:STRATEGIC APPR.AP ED.
4th Edition
ISBN: 9780137574728
Author: Knight
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 10, Problem 97MSPP
Work and Power in Cycling
When you ride a bicycle at constant speed, almost all of the energy you expend goes into the work you do against the drag force of the air. In this problem, assume that all of the energy expended goes into working against drag. As we saw in Section 5.7, the drag force on an object is approximately proportional to the square of its speed with respect to the air. For this problem, assume that F α v2 exactly and that the air is motionless with respect to the ground unless noted otherwise. Suppose a cyclist and her bicycle have a combined mass of 60 kg and she is cycling along at a speed of 5 m/s.
88. If she doubles her speed to 10 m/s, how much energy does she use in cycling 1 km?
A. 20 kJ
B. 40 kJ
C. 200 kJ
D. 400 kJ
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Question 16
2.9 Three Pulleys
2.9a A thin, light rope is draped over three frictionless pulleys arranged around the origin as shown. Each pulley is a solid disk of radius r=2cm and is equidistant from the origin. 5kg mass is attached to one side and a 7kg mass to the other.
Before the masses are released and in motion, what is the total angular momentum in kgm2/s around the origin?
Question 17
2.9b What fraction of the angular momentum is in the pulleys?
At what temperature would water boil if the outside pressure was only 19,900 Pa in degrees Celsius?
Which of these properties of a sound wave is associated with the pitch of the sound that we hear?
amplitudefrequency intensity levelintensity
Chapter 10 Solutions
COLLEGE PHYSICS:STRATEGIC APPR.AP ED.
Ch. 10 - The brake shoes of your car are made of a material...Ch. 10 - For Questions 3 through 1 0, give a specific...Ch. 10 - For Questions 3 through 1 0, give a specific...Ch. 10 - For Questions 3 through 10, give a specific...Ch. 10 - For Questions 3 through 10, give a specific...Ch. 10 - For Questions 3 through 1 0, give a specific...Ch. 10 - For Questions 3 through 1 0, give a specific...Ch. 10 - For Questions 3 through 1 0, give a specific...Ch. 10 - For Questions 3 through 1 0, give a specific...Ch. 10 - A ball of putty is dropped from a height of 2 m...
Ch. 10 - Puck B has twice the mass of puck A. Starting from...Ch. 10 - To change a tire, you need to use a jack to raise...Ch. 10 - Prob. 15CQCh. 10 - A roller coaster car rolls down a frictionless...Ch. 10 - A spring gun shoots out a plastic ball at speed v....Ch. 10 - Prob. 19CQCh. 10 - Sandy and Chris stand on the edge of a cliff and...Ch. 10 - Prob. 21CQCh. 10 - Prob. 24CQCh. 10 - A roller coaster starts from rest at its highest...Ch. 10 - A woman uses a pulley and a rope to raise a 20 kg...Ch. 10 - A hockey puck sliding along frictionless ice with...Ch. 10 - A block slides down a smooth ramp, starting from...Ch. 10 - A wrecking ball is suspended from a 5.0-m-long...Ch. 10 - Prob. 30MCQCh. 10 - Prob. 31MCQCh. 10 - Prob. 1PCh. 10 - The two ropes seen in Figure P10.2 are used to...Ch. 10 - The two ropes shown in the bird's-eye view of...Ch. 10 - Prob. 4PCh. 10 - A boy flies a kite with the string at a 30 angle...Ch. 10 - Prob. 6PCh. 10 - A crate slides down a ramp that makes a 20 angle...Ch. 10 - Prob. 8PCh. 10 - At what speed does a 1000 kg compact car have the...Ch. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - How fast would an 80 kg man need to run in order...Ch. 10 - Prob. 14PCh. 10 - Sams job at the amusement park is to slow down and...Ch. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - An energy storage system based on a flywheel (a...Ch. 10 - The lowest point in death Valley is 85.0 m below...Ch. 10 - The world's fastest humans can reach speeds of...Ch. 10 - A 72 kg bike racer climbs a 1200-m-long section of...Ch. 10 - A 1000 kg wrecking ball hangs from a 15-m-long...Ch. 10 - How far must you stretch a spring with k = 1000...Ch. 10 - How much energy can be stored in a spring with a...Ch. 10 - Prob. 26PCh. 10 - The elastic energy stored in your tendons can...Ch. 10 - Prob. 28PCh. 10 - Mark pushes his broken car 150 m down the block to...Ch. 10 - Prob. 30PCh. 10 - A 900 N crate slides 12m down a ramp that makes an...Ch. 10 - Prob. 32PCh. 10 - A 25 kg child slides down a playground slide at a...Ch. 10 - Prob. 34PCh. 10 - A boy reaches out of a window and tosses a ball...Ch. 10 - Prob. 36PCh. 10 - What minimum speed does a 100 g puck need to make...Ch. 10 - Prob. 38PCh. 10 - Prob. 39PCh. 10 - Prob. 40PCh. 10 - A fireman of mass 80 kg slides down a pole. When...Ch. 10 - Prob. 42PCh. 10 - Prob. 43PCh. 10 - Prob. 44PCh. 10 - In the winter activity of tubing, riders slide...Ch. 10 - Prob. 46PCh. 10 - A cyclist is coasting at 12 m/s when she starts...Ch. 10 - Prob. 48PCh. 10 - Prob. 49PCh. 10 - Prob. 51PCh. 10 - Prob. 52PCh. 10 - Prob. 53PCh. 10 - Prob. 54PCh. 10 - A 50 g marble moving at 2.0 m/s strikes a 20 g...Ch. 10 - Ball 1, with a mass of 100 g and traveling at 10...Ch. 10 - Prob. 57PCh. 10 - Two balls undergo a perfectly elastic head-on...Ch. 10 - Prob. 59PCh. 10 - Prob. 61PCh. 10 - Prob. 62PCh. 10 - A 1000 kg sports car accelerates from 0 to 30m/sin...Ch. 10 - Prob. 64PCh. 10 - An elite Tour de France cyclist can maintain an...Ch. 10 - Prob. 66PCh. 10 - A 710 kg car drives at a constant speed of 23 m/s....Ch. 10 - Prob. 68PCh. 10 - An elevator weighing 2500 N ascends at a constant...Ch. 10 - Prob. 70PCh. 10 - A 550 kg elevator accelerates upward at 1.2 m/s2...Ch. 10 - Prob. 73GPCh. 10 - Prob. 74GPCh. 10 - Prob. 75GPCh. 10 - You are driving your 1500 kg car at 20 m/s down a...Ch. 10 - Prob. 77GPCh. 10 - Prob. 78GPCh. 10 - Prob. 79GPCh. 10 - Prob. 80GPCh. 10 - The maximum energy a bone can absorb without...Ch. 10 - In an amusement park water slide, people slide...Ch. 10 - Prob. 83GPCh. 10 - Prob. 84GPCh. 10 - Two coupled boxcars are rolling along at 2.5 m/s...Ch. 10 - A 50 g ball of clay traveling at 6.5 m/s hits and...Ch. 10 - Prob. 87GPCh. 10 - Prob. 88GPCh. 10 - The mass of an elevator and its occupants is 1200...Ch. 10 - Tennis Ball Testing A tennis ball bouncing on a...Ch. 10 - Tennis Ball Testing A tennis ball bouncing on a...Ch. 10 - Tennis Ball Testing A tennis ball bouncing on a...Ch. 10 - Prob. 93MSPPCh. 10 - Tennis Ball Testing A tennis ball bouncing on a...Ch. 10 - Work and Power in Cycling When you ride a bicycle...Ch. 10 - Work and Power in Cycling When you ride a bicycle...Ch. 10 - Work and Power in Cycling When you ride a bicycle...Ch. 10 - Work and Power in Cycling When you ride a bicycle...Ch. 10 - Work and Power in Cycling When you ride a bicycle...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Why are BSL-4 suits pressurized? Why not just wear tough regular suits?
Microbiology with Diseases by Body System (5th Edition)
Distinguish between microevolution, speciation, and macroevolution.
Campbell Essential Biology (7th Edition)
4. What five specific threats to biodiversity are described in this chapter? Provide an example of each.
Biology: Life on Earth (11th Edition)
l. Suppose you have the uniformly charged cube in FIGURE Q24.1. Can you use symmetry alone to deduce the shape ...
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Why is petroleum jelly used in the hanging-drop procedure?
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
How do you think a cell performing cellular respiration rids itself of the resulting CO2?
Campbell Biology (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
- A wave travels upward in a medium (vertical wave velocity). What is the direction of particle oscillation for the following? (a) a longitudinal wave parallel to the direction of propagationperpendicular to the direction of propagationarrow_forwardThe faster a molecule is moving in the upper atmosphere, the more likely it is to escape Earth's gravity. Given this fact, and your knowledge of rms speed, which of the following molecules can escape most easily from Earth's atmosphere if they are all at the same temperature?arrow_forwardThe temperature in one part of a flame is 2,100 K. What is the rms velocity of the carbon dioxide molecules at this temperature? Give your answer as the number of meters per second. mass of 1 mole of CO2 = 44.0 grams 1 mole contains 6.02 x 1023 molecules the Boltzmann constant k = 1.38 x 10-23 J/Karrow_forward
- The specific heat of a certain substance is 375 J/(kg°C). How much heat energy would you have to add to increase the temperature of 22 kg of this substance from 33°C up to 44°C in a number of Joules?arrow_forward3.9 moles of an ideal gas are sealed in a container with volume 0.22 m3, at a pressure of 146,000 N/m2. What is the temperature of the gas in degrees Celsius?arrow_forwardwhen a cannon is launched at a 65 degree angle, will it have the same horizontal velocity as when it is launched from a 25 degree angle as long as the initial speed is the same?arrow_forward
- Please solve the problem step by step with explanations along each step explaining what's been done.Thank you!!arrow_forwardFigure 8.14 shows a cube at rest and a small object heading toward it. (a) Describe the directions (angle 1) at which the small object can emerge after colliding elastically with the cube. How does 1 depend on b, the so-called impact parameter? Ignore any effects that might be due to rotation after the collision, and assume that the cube is much more massive than the small object. (b) Answer the same questions if the small object instead collides with a massive sphere.arrow_forward2. A projectile is shot from a launcher at an angle 0,, with an initial velocity magnitude vo, from a point even with a tabletop. The projectile hits an apple atop a child's noggin (see Figure 1). The apple is a height y above the tabletop, and a horizontal distance x from the launcher. Set this up as a formal problem, and solve for x. That is, determine an expression for x in terms of only v₁, 0, y and g. Actually, this is quite a long expression. So, if you want, you can determine an expression for x in terms of v., 0., and time t, and determine another expression for timet (in terms of v., 0.,y and g) that you will solve and then substitute the value of t into the expression for x. Your final equation(s) will be called Equation 3 (and Equation 4).arrow_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 Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
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
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
8.01x - Lect 11 - Work, Kinetic & Potential Energy, Gravitation, Conservative Forces; Author: Lectures by Walter Lewin. They will make you ♥ Physics.;https://www.youtube.com/watch?v=9gUdDM6LZGo;License: Standard YouTube License, CC-BY