Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 5, Problem 104GP
(III) Assume a net force F = −mg − kv2 acts during the upward vertical motion of a 250-kg rocket, starting at the moment (t = 0) when the fuel has burned out and the rocket has an upward speed of 120 m/s. Let k = 0.65 kg/m. Estimate v and y at 1.0-s intervals for the upward motion only, and estimate the maximum height reached. Compare to free-flight conditions without air resistance (k = 0).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
(III) A person jumps from the roof of a house 2.8 m high.When he strikes the ground below, he bends his knees sothat his torso decelerates over an approximate distance of0.70 m. If the mass of his torso (excluding legs) is 42 kg,find (a) his velocity just before his feet strike the ground,and (b) the average force exerted on his torso by his legsduring deceleration.
(B) A maintenance man (climber) tries to maintain one of the power stations iocated at the
top of the mountain in the situation of winter. During his work and by mistake drops his
water bottle which then slides 100 M down the side of a steep icy slope to a point which is
10 m lower than the climber's position. The mass of the climber is 60 kg and his water bottle
has a mass of 500 g.
1) If the bottle starts from rest, how fast is it travelling by the time it reaches the bottom
of the slope? (Neglect friction.)
What is the total change in the climber's potential energy as she climbs down the mountain
to fetch her fallen water bottle? i.e. what is the difference between her potential energy at
the top of the slope and the bottom of the slope? Analysis all the above situation.
A parachutist whose mass is 75 kg drops from a helicopter hovering 1000 m above the ground and falls toward the ground under the influence of gravity. Assume that the force due to air resistance is
proportional to the velocity of the parachutist, with the proportionality constant b, 30 N-secim when the chute is closed and by 100 N-secim when the chule is open if the chute does not open
until the velocity of the parachutist reaches 20 m/sec, after how many seconds will the parachutist reach the ground? Assume that the acceleration due to gravity is 9.81 m/sec
The parachutist will reach the ground after
(Round to two decimal places as needed.)
seconds.
CHE
Chapter 5 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 5.1 - If s = 0.40 and mg = 20 N, what minimum force F...Ch. 5.1 - Prob. 1BECh. 5.2 - Prob. 1CECh. 5.2 - If the radius is doubled to 1.20m but the period...Ch. 5.3 - A rider on a Ferris wheel moves in a vertical...Ch. 5.4 - The banking angle of a curve for a design speed v...Ch. 5.4 - Can a heavy truck and a small car travel safely at...Ch. 5.4 - When the speed of the race car in Example 516 is...Ch. 5 - A heavy crate rests on the bed of a flatbed truck....Ch. 5 - A block is given a push so that it slides up a...
Ch. 5 - Why is the stopping distance of a truck much...Ch. 5 - Can a coefficient of friction exceed 1.0?Ch. 5 - Cross-country skiers prefer their skis to have a...Ch. 5 - When you must brake your car very quickly, why is...Ch. 5 - When attempting to stop a car quickly on dry...Ch. 5 - You are trying to push your stalled car. Although...Ch. 5 - It is not easy to walk on an icy sidewalk without...Ch. 5 - A car rounds a curve at a steady 50 km/h. If it...Ch. 5 - Will the acceleration of a car be the same when a...Ch. 5 - Describe all the forces acting on a child riding a...Ch. 5 - A child on a sled comes flying over the crest of a...Ch. 5 - Sometimes it is said that water is removed from...Ch. 5 - Technical reports often specify only the rpm for...Ch. 5 - A girl is whirling a ball on a string around her...Ch. 5 - The game of tetherball is played with a ball tied...Ch. 5 - Astronauts who spend long periods in outer space...Ch. 5 - A bucket of water can be whirled in a vertical...Ch. 5 - A car maintains a constant speed v as it traverses...Ch. 5 - Why do bicycle riders lean in when rounding a...Ch. 5 - Why do airplanes bank when they turn? How would...Ch. 5 - For a drag force of the form F = bv, what are the...Ch. 5 - Suppose two forces act on an object, one force...Ch. 5 - (I) If the coefficient of kinetic friction between...Ch. 5 - (I) A force of 35.0 N is required to start a...Ch. 5 - (I) Suppose you are standing on a train...Ch. 5 - (I) The coefficient of static friction between...Ch. 5 - (I) What is the maximum acceleration a car can...Ch. 5 - (II) (a) A box sits at rest on a rough 33 inclined...Ch. 5 - (II) A 25.0-kg box is released on a 27 incline and...Ch. 5 - (II) A car can decelerate at 3.80 m/s2 without...Ch. 5 - (II) A skier moves down a 27 slope at constant...Ch. 5 - (II) A wet bar of soap slides freely down a ramp...Ch. 5 - (II) A box is given a push so that it slides...Ch. 5 - (II) (a) Show that the minimum stopping distance...Ch. 5 - (II) A 1280-kg car pulls a 350-kg trailer. The car...Ch. 5 - (II) Police investigators, examining the scene of...Ch. 5 - (II) Piles of snow on slippery roofs can become...Ch. 5 - (II) A small box is held in place against a rough...Ch. 5 - (II) Two crates, of mass 65 kg and 125 kg, are in...Ch. 5 - (II) The crate shown in Fig. 5-33 lies on a plane...Ch. 5 - (II) A crate is given an initial speed of 3.0 m/s...Ch. 5 - (II) Two blocks made of different materials...Ch. 5 - (II) For two blocks, connected by a cord and...Ch. 5 - (II) A flatbed truck is carrying a heavy crate....Ch. 5 - (II) In Fig 535 the coefficient of static friction...Ch. 5 - (II) Determine a formula for the acceleration of...Ch. 5 - (II) A small block of mass m is given an initial...Ch. 5 - (II) A 75-kg snowboarder has an initial velocity...Ch. 5 - (II) A package of mass m is dropped vertically...Ch. 5 - (II) Two masses mA = 2.0 kg and mB = 5.0 kg are on...Ch. 5 - (II) A child slides down a slide with a 34...Ch. 5 - (II) (a) Suppose the coefficient of kinetic...Ch. 5 - (III) A 3.0-kg block sits on top of a 5.0-kg block...Ch. 5 - (III) A 4.0-kg block is stacked on top of a...Ch. 5 - (III) A small block of mass m rests on the rough...Ch. 5 - (I) What is the maximum speed with which a 1200-kg...Ch. 5 - (I) A child sitting 1.20 m from the center of a...Ch. 5 - (I) A jet plane traveling 1890 km/h (525 m/s)...Ch. 5 - (II) Is it possible to whirl a bucket of water...Ch. 5 - (II) How fast (in rpm) must a centrifuge rotate if...Ch. 5 - (II) Highway curves are marked with a suggested...Ch. 5 - (II) At what minimum speed must a roller coaster...Ch. 5 - (II) A sports car crosses the bottom of a valley...Ch. 5 - (II) How large must the coefficient of static...Ch. 5 - (II) Suppose the space shuttle is in orbit 400 km...Ch. 5 - (II) A bucket of mass 2.00 kg is whirled in a...Ch. 5 - (II) How many revolutions per minute would a...Ch. 5 - (II) Use dimensional analysis (Section 1-7) to...Ch. 5 - (II) A jet pilot takes his aircraft in a vertical...Ch. 5 - (II) A proposed space station consists of a...Ch. 5 - (II) On an ice rink two skaters of equal mass grab...Ch. 5 - (II) Redo Example 511, precisely this time, by not...Ch. 5 - (II) A coin is placed 12.0cm from the axis of a...Ch. 5 - (II) The design of a new road includes a straight...Ch. 5 - (II) A 975-kg sports car (including driver)...Ch. 5 - (II) Two blocks with masses mA and mB, are...Ch. 5 - (II) Tarzan plans to cross a gorge by swinging in...Ch. 5 - (II) A pilot performs an evasive maneuver by...Ch. 5 - (III) The position of a particle moving in the xy...Ch. 5 - (III) If a curve with a radius of 85 m is properly...Ch. 5 - Since the curve is designed for a speed of 85...Ch. 5 - Prob. 60PCh. 5 - (II) In Problem 60 assume the tangential...Ch. 5 - (II) An object moves in a circle of radius 22 m...Ch. 5 - (III) A particle rotates in a circle of radius...Ch. 5 - (III) An object of mass m is constrained to move...Ch. 5 - (I) Use dimensional analysis (Section 17) in...Ch. 5 - (II) The terminal velocity of a 3 105 kg raindrop...Ch. 5 - (II) An object moving vertically has v=v0at t = 0....Ch. 5 - (III) The drag force on large objects such as...Ch. 5 - (III) A bicyclist can cost down a 7.0 hill at a...Ch. 5 - (III) Two drag forces act on a bicycle and rider:...Ch. 5 - (III) Determine a formula for the position and...Ch. 5 - (III) A block of mass m slides along a horizontal...Ch. 5 - (III) Show that the maximum distance the block in...Ch. 5 - (III) You dive straight down into a pool of water....Ch. 5 - (III) A motorboat traveling at a speed of 2.4 m/s...Ch. 5 - A coffee cup on the horizontal dashboard of a car...Ch. 5 - A 2.0-kg silverware drawer does not slide readily....Ch. 5 - A roller coaster reaches the top of the steepest...Ch. 5 - An 18.0-kg box is released on a 37.0 inclinc and...Ch. 5 - A flat puck (mass M) is revolved in a circle on a...Ch. 5 - A motorcyclist is coasting with the engine off at...Ch. 5 - In a Rotor-ride at a carnival, people rotate in a...Ch. 5 - A device for training astronauts and jet fighter...Ch. 5 - A 1250-kg car rounds a curve of radius 72 m banked...Ch. 5 - Determine the tangential and centripetal...Ch. 5 - The 70.0-kg climber in Fig. 550 is supported in...Ch. 5 - A small mass m is set on the surface of a sphere,...Ch. 5 - A 28.0-kg block is connected to an empty 2.00-kg...Ch. 5 - A car is heading down a slippery road at a speed...Ch. 5 - What is the acceleration experienced by the tip of...Ch. 5 - An airplane traveling at 480 km/h needs to reverse...Ch. 5 - A banked curve of radius R in a new highway...Ch. 5 - A small head of mass m is constrained to slide...Ch. 5 - Earth is not quite an inertial frame. We often...Ch. 5 - While fishing, you get bored and start to swing a...Ch. 5 - Consider a train that rounds a curve with a radius...Ch. 5 - A car starts rolling down a 1-in-4 hill (1-in-4...Ch. 5 - The sides of a cone make an angle with the...Ch. 5 - A 72kg water skier is being accelerated by a ski...Ch. 5 - A ball of mass m = 1.0 kg at the end of a thin...Ch. 5 - A car drives at a constant speed around a banked...Ch. 5 - (III) The force of air resistance (drag force) on...Ch. 5 - (III) The coefficient of kinetic friction k...Ch. 5 - (III) Assume a net force F = mg kv2 acts during...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Extrasolar Planet Mission. Learn about a proposed future mission to study extrasolar planets, including its pro...
Life in the Universe (4th Edition)
Choose the best answer to each of the following. Explain your reasoning. Which of the following does not provid...
The Cosmic Perspective Fundamentals (2nd Edition)
What gas molecules are primarily responsible for the absorption of each of the following types of light in our ...
Lecture- Tutorials for Introductory Astronomy
Express the unit vectors in terms of (that is, derive Eq. 1.64). Check your answers several ways Also work o...
Introduction to Electrodynamics
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
- Suppose your car approches a hill and has an intial speed of 106 km/h at the bottom of the hill. The driver takes her foot off the gas pedal and allows the car to cost up hill. the mass of the car is 740 kg and it stops at height 21 m above the starting point. What is the magnitutde of the average force of friction, in newtons, if the hill has as slope 2.2 degrees above the horizontalarrow_forwardPlease Asaparrow_forwardTwo snowy peaks are at heights H 850 m and h 750 m above the valley between them. A ski run extends between the peaks, with a total length of 3.2 km and an average slope of 30 ). (a) A skier starts from rest at the top of the higher peak. At what speed will he arrive at the top of the lower peak if he coasts without using ski poles? Ignore friction. (b) Approximately what coefficient of kinetic friction between snow and skis would make him stop just at the top of the lower peak?arrow_forward
- A frictionless incline is 5.00 m long (the distance from the top of the incline to the bottom, measured along the incline). The vertical distance from the top of the incline to the bottom is 2.26 m. A small block is released from rest at the top of the incline and slides down the incline. (i) How long does it take the block to reach the ground?arrow_forwardA 75-kg snowboarder has an initial velocity of 5.0 m/s at the top of a 28° incline (Fig. 4–75). After sliding down the 110-m-long incline (on which the coefficient of kinetic friction is uk = 0.18), the snowboarder has attained a velocity v. The snowboarder then slides along a flat surface (on which uk = 0.15) and comes to rest after a distance x. Use Newton's second law to find the snowboarder's accel- eration while on the incline and while on the flat surface. Then use these accelerations to determinex. 5.0 m/s 110 m Uk = 0.18 %3D 28°/ Hk = 0.15 FIGURE 4–75 Problem 92.arrow_forwardSuppose the total resistive force R to the motion of a car moving in a straight lineis directly proportional to its speed, i.e. R = kv where k is a constant. The car hasa mass of 1600 kg and can maintain a steady speed of 72 km/h when travelling upan incline of 12◦ with the engine working at 85 kW.(a) Obtain the value of k.(b) Find the acceleration of the car when it is travelling down the same hill at thesame speed and the engine is working at 45 kWarrow_forward
- C) The velocity of a falling parachutist is given by v= 1-e tem], where g-9.8 m/s. For a parachutist with a drag coefficient C-14.75 kg/s, compute the mass (m) so that the velocity is v - 40 m/s at t- 10 s by two iterations of the False-Position Method, with initial guesses [65 - 80]. 1. m - 68.1 2. m-75.7 3. m- 77.3 4. m-69.25arrow_forwardPart (b) Write an expression for the magnitude of the change in the car's height, h, along the y-direction, assuming it travels a distance L down the incline.arrow_forwardA block of mass m slides down from rest on a rough incline of length 8m where the incline makes an angle of 30° with the horizontal. The block comes to rest on the rough horizontal surface after sliding for 4 m. The coefficient of kinetic friction on the incline is 0.30. The coefficient of kinetic friction on the horizontal surface is different from the incline, find this value using two approaches: (i) Using Newton's laws of motion and Kinematics and 30⁰ (ii) Using Work-Kinetic Energy Theorem (Give answer to 2 sig. figs.) 4 m 8 m WAarrow_forward
- An airplane flies at a constant altitude of 1200 m and a constant speed of 80 m/'s when a 7.0 kg bowling ball falls out of the cargo hold. Ignoring air resistance, according to someone watching this from the ground, which of the paths (a) through (e) would the bowling ball follow most closely as it falls to the ground? OD O A OE OB 10plc Ouestion 2arrow_forward(c) A 300 g particle moves along y-axis according to the equation y(t) = 25 + 6t + 7t2 -6t3-t with y in meter and time in seconds. Determine the following: (i) The acceleration at t = 1.2 s (ii) The net force acting on the particle at t =1.2 s.arrow_forwardThe normal force on an extreme skier descending a very steep slope (Fig. 4–42) can be zero if(a) his speed is great enough.(b) he leaves the slope (no longer touches the snow).(c) the slope is greater than 75°.(d) the slope is vertical (90°).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage LearningPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Work and Energy - Physics 101 / AP Physics 1 Review with Dianna Cowern; Author: Physics Girl;https://www.youtube.com/watch?v=rKwK06stPS8;License: Standard YouTube License, CC-BY