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
Videos
Textbook Question
Chapter 2.2, Problem 1BE
A car travels at a constant 50km/h for 100 km. It then speeds up to 100 km/h and is driven another 100 km. What is the car’s average speed for the 200 km trip? (a) 67 km/h; (b) 75 km/h; (c) 81 km/h; (d) 50km/h.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Amel goes for a walk with a speed of 3kph. After 30 minutes of walk, his wife follows him. Walking 3.25 km for the first hour, 3.75 km for the second hour, 4 km for the third hour and so on maintaining a speed of .25 km per hour. How many hours does the wife take to catch up to her husband?
Starting from rest, a bus leaves a
gas station with a constant
acceleration of 2 m/s^2 until it
reaches a speed of 10 m/s. The
bus then continues to move with
this speed (10 m/s) for 5 s. Then
the bus decelerates at 2.5 m/s^2
until it stops. What is the total
distance traveled by the bus?
(Answer: 95 m)
A hippopotamus can run up to 9.86 m/s. Suppose a hippopotamus
uniformly accelerates 0.28 m/s² until it reaches a top speed of 9.86
m/s. If the hippopotamus has run 25.1 m, what is its initial speed in
m/s? (round your answer to two decimal places; DO NOT include units)
Chapter 2 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 2.1 - An ant starts at x = 20cm on a piece of graph...Ch. 2.2 - A car travels at a constant 50km/h for 100 km. It...Ch. 2.3 - What is your speed at the instant you turn around...Ch. 2.4 - A powerful car is advertised to go from zero to 60...Ch. 2.4 - A car moves along the x axis. What is the sign of...Ch. 2.4 - The position of a particle is given by the...Ch. 2.5 - A car starts from rest and accelerates at a...Ch. 2.7 - Return to the Chapter-Opening Question. page 18,...Ch. 2.7 - If a car is said to accelerate at 0.50 g, what is...Ch. 2.7 - Two balls are thrown from a cliff. One is thrown...
Ch. 2 - Does a car speedmeter measure speed, velocity, or...Ch. 2 - Can an object have a varying speed if its velocity...Ch. 2 - When an object moves with constant velocity, does...Ch. 2 - If one object has a greater speed than a second...Ch. 2 - Compare the acceleration of a motorcycle that...Ch. 2 - Can an object have a northward velocity and a...Ch. 2 - Can the velocity of an object be negative when its...Ch. 2 - Give an example where both the velocity and...Ch. 2 - Two cars emerge side by side from a tunnel. Car A...Ch. 2 - Can an object be increasing in speed as its...Ch. 2 - A baseball player hits a ball straight up into the...Ch. 2 - As a freely falling object speeds up, what is...Ch. 2 - You travel from point A to point B in a car moving...Ch. 2 - Can an object have zr velocity and nonzero...Ch. 2 - Can an object have zero acceleration and nonzero...Ch. 2 - Which of these motions is not at constant...Ch. 2 - In a lecture demonstration, a 3.0-m-long vertical...Ch. 2 - Describe in words the motion plotted in Fig. 236...Ch. 2 - Describe in words the motion of the object graphed...Ch. 2 - (I) If you are driving 110 km/h along a straight...Ch. 2 - What must your cars average speed be in order to...Ch. 2 - (I) A particle at t1 = 2.0 s is at x1 = 4.3 cm and...Ch. 2 - A rolling ball moves from x1 = 3.4 cm to x2 = 4.2...Ch. 2 - (II) According to a rule-of-thumb, every five...Ch. 2 - (II) You are driving home from school steadily at...Ch. 2 - (II) A horse canters away from its trainer in a...Ch. 2 - (II) T x = 34 + 10t 2t3, where t is in seconds...Ch. 2 - (II) The position of a rabbit along a straight...Ch. 2 - (II) On an audio compact disc (CD), digital bits...Ch. 2 - A car traveling 95 km/h is 110 m behind a truck...Ch. 2 - (II) Two locomotives approach each other on...Ch. 2 - (II) Digital bits on a 12.0-cm diameter audio CD...Ch. 2 - (II) An airplane travels 3100 km at a speed of 720...Ch. 2 - (II) Calculate the average speed and average...Ch. 2 - (II) The position of a ball rolling in a straight...Ch. 2 - (II) A dog runs 120m away from its master in a...Ch. 2 - (III) An automobile traveling 95 km/h overtakes a...Ch. 2 - (III) A bowling ball traveling with constant speed...Ch. 2 - (I) A sports car accelerates from rest to 95 km/h...Ch. 2 - (I) At highway speeds, a particular automobile is...Ch. 2 - (I) A sprinter accelerates from rest to 9.00m/s in...Ch. 2 - (I) Figure 2-37 shows the velocity of a train as a...Ch. 2 - (II) A sports car moving at constant speed travels...Ch. 2 - (II) A car moving in a straight line starts at x =...Ch. 2 - (II) A particular automobile can accelerate...Ch. 2 - (II) A particle moves along the x axis. Its...Ch. 2 - (II) The position of a racing car, which starts...Ch. 2 - (II) The position of an object is given by x = At...Ch. 2 - (I) A car slows down from 25 m/s to rest in a...Ch. 2 - (I) A car accelerates from 12 m/s to 21 m/s in 6.0...Ch. 2 - (I) A light plane must reach a speed of 32m/s for...Ch. 2 - (II) A baseball pitcher throws a baseball with a...Ch. 2 - (II) Show that =(+0)/2 (see Eq. 2-12d) is not...Ch. 2 - (II) A world-class sprinter can reach a top speed...Ch. 2 - (II) An inattentive driver is traveling 18.0 m/s...Ch. 2 - (II) A car slows down uniformly from a speed of...Ch. 2 - (II) In coming to a stop, a car leaves skid marks...Ch. 2 - (II) A car traveling 85 km/h slows down at a...Ch. 2 - (II) A car traveling at 105 km/h strikes a tree....Ch. 2 - (II) Determine the stopping distances for an...Ch. 2 - (II) A space vehicle accelerates uniformly from 65...Ch. 2 - (II) A 75-m-long train begins uniform acceleration...Ch. 2 - (II) An unmarked police car traveling a constant...Ch. 2 - (III) Assume in Problem 44 that the speeders speed...Ch. 2 - (III) A runner hopes to complete the 10,000-m run...Ch. 2 - (III) Mary and Sally are in a fool race (Fig....Ch. 2 - (I) A stone is dropped from the top of a cliff. It...Ch. 2 - (I) If a car rolls gently (v0 = 0) off a vertical...Ch. 2 - (I) Estimate (a) how long it took King kong to...Ch. 2 - (II) A baseball is hit almost straight up into the...Ch. 2 - (II) A ball player catches a ball 3.2 s after...Ch. 2 - (II) A kangaroo jumps to a vertical height of 1.65...Ch. 2 - (II) The best rebounders in basketball have a...Ch. 2 - (II) A helicopter is ascending vertically with a...Ch. 2 - (II) For an object falling freely from rest, show...Ch. 2 - (II) A baseball is seen to pass upward by a window...Ch. 2 - (II) A rocket rises vertically, from rest, with an...Ch. 2 - (II) Roger sees water balloons fall past his...Ch. 2 - (II) A stone is thrown vertically upward with a...Ch. 2 - (II) A falling stone takes 0.33 s to travel past a...Ch. 2 - (II) Suppose you adjust your garden hose nozzle...Ch. 2 - (III) A toy rocket moving vertically upward passes...Ch. 2 - (III) A ball is dropped from the top of a...Ch. 2 - (III) A rock is dropped from a sea cliff and the...Ch. 2 - (III) A rock is thrown vertically upward with a...Ch. 2 - (II) Given v(t) = 25 + 18t, where v is in m/s and...Ch. 2 - (III) The acceleration of a particle is given by...Ch. 2 - (III) Air resistance acting on a falling body can...Ch. 2 - A fugitive tries to hop on a freight train...Ch. 2 - The acceleration due to gravity on the Moon is...Ch. 2 - A person jumps from a fourth-story window 15.0 m...Ch. 2 - A person who is properly restrained by an...Ch. 2 - Pelicans tuck their wings and free-fall straight...Ch. 2 - Suppose a car manufacturer tested its cars for...Ch. 2 - A stone is dropped from the roof of a high...Ch. 2 - A bicyclist in the Tour de France crests a...Ch. 2 - Consider the street pattern shown in Fig. 247....Ch. 2 - In putting, the force with which a golfer strikes...Ch. 2 - A robot used in a pharmacy picks up a medicine...Ch. 2 - A stone is thrown vertically upward with a speed...Ch. 2 - Figure 250 is a position versus time graph for the...Ch. 2 - In the design of a rapid transit system, it is...Ch. 2 - A person jumps off a diving board 4.0 m above the...Ch. 2 - Bill can throw a ball vertically at a speed 1.5...Ch. 2 - Sketch the v vs. t graph for the object whose...Ch. 2 - A person driving her car at 45 km/h approaches an...Ch. 2 - A car is behind a truck going 25 m/s on the...Ch. 2 - Agent Bond is standing on a bridge, 13m above the...Ch. 2 - A police car at rest, passed by a speeder...Ch. 2 - A fast-food restaurant uses a conveyor belt to...Ch. 2 - Two students are asked to find the height of a...Ch. 2 - Figure 252 shows the position vs. time graph for...Ch. 2 - You are traveling at a constant speed vM, and...Ch. 2 - (III) A lifeguard standing at the side of a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
A spherical shell carries charge Q distributed uniformly over its surface. If the charge on the shell doubles, ...
Essential University Physics: Volume 2 (3rd Edition)
25. The 100 kg block in FIGURE EX7.25 takes 6.0 s to reach the floor after being released from rest. What is th...
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)
15.65 Clothesline Nodes. Cousin Throckmorton is once again playing with the clothesline in Example 15.2 (Sectio...
University Physics (14th Edition)
The pV-diagram of the Carnot cycle.
Sears And Zemansky's University Physics With Modern Physics
The voltage drop across the wire.
College Physics: A Strategic Approach (3rd 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
- In World War II, there were several reported cases of airmen who jumped from their flaming airplanes with no parachute to escape certain death. Some fell about 20,000 feet (6000 m), and some of them survived, with few life- threatening injuries. For these lucky pilots, the tree branches and snow drifts on the ground allowed their deceleration to be relatively small. If we assume that a pilot's speed upon impact was 123 mph (54 m/s), then what was his deceleration? Assume that the trees and snow stopped him over a distance of 3.0 m.arrow_forwardWalk along a long straight level path in the woods you go 30 m in 6.2 s, stop for 32 s, and then continue on in the same direction 40 m more in 15 s. What was your average speed for all of this?arrow_forwardWendy walks 10 m in one direction at 2 m/s, then runs 6 m in the same direction at 6 m/s. Next, she stops for 4 seconds and finally walks in the opposite direction at 4 m/s for 6 seconds. Wendy's average speed is closest to: 1. m/s 3. 1½ m/s 2. 1 m/s 4.2 m/s 6.3 m/s 5. 22 m/s 7.32 m/s 8. 4 m/s 9. The negative of one of the choices above 10. Impossible to determinearrow_forward
- Your grandfather had to walk to school uphill, both ways, but one way he went at 5.0 km/hr, and the other he went at 4.0 km/hr. What is his average speed for the round trip? 0.50 km/hr 5.6 km/hr 9.5 km/hr 4.4 km/hrarrow_forwardWe travel from Winnipeg to Regina and back. The total distance is 1100km. The return to Winnipeg is made in a snowstorm at an average speed of 20km/h slower than the outward journey. If the whole trip took 13 hours, what is the average speed in each direction?arrow_forwardA bicyclist is practicing to increase his endurance for a one-hour trip. He has an average speed of 30 m/s in the first 30 min. If the cyclist wants an average speed of 40 m/s for the entire trip, by how much does he need to increase his average speed in the last 30 minutes?arrow_forward
- A light plane must reach a speed of 32 m/sm/s for takeoff. How long a runway is needed if the (constant) acceleration is 2.7 m/s2m/s2 ? Express your answer using two significant figures.arrow_forwardTo burn the fats she accumulated during the lockdown, Katie walks south at a speed of 2.00 m/s for 60.0 minutes. She then turns around and walks north a distance 3000 m in 25.0 minutes. What is her total distance covered?arrow_forwardAnswer this problem step by step. A golf ball is thrown downward at a speed of 10 m/s. If its velocity just before it hits the ground is 5.6 m/s, from what height was it thrown? 1. Answer the problem step by step.arrow_forward
- A toy car starts from rest and reaches a speed of 5.13[m/s] in 1.13[s]. How far did the car travel in that time? Express your answer in meters.arrow_forwardA student drives the 105-mi trip back to campus after spring break and travels with an average speed of 56 mi/h for 1 hour and 30 minutes for the first part of the trip. (a) What distance was traveled during this time? (b) Traffic gets heavier, and the last part of the trip takes another half-hour. What was the average speed during this leg of the trip? (c) Find the average speed for the total trip.arrow_forwardJulie drives 91 mi to Grandmother's house. On the way to Grandmother's house, Julie drives half the distance at 36 mph and half the distance at 56 mph. On her return trip, she drives half the time at 36 mph and half the time at 56 mph. What is Julie's average speed on the way to Grandmother's house?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
University Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSON
Introduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Lecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
University Physics (14th Edition)
Physics
ISBN:9780133969290
Author:Hugh D. Young, Roger A. Freedman
Publisher:PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:9781107189638
Author:Griffiths, David J., Schroeter, Darrell F.
Publisher:Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:9780321820464
Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:Addison-Wesley
College Physics: A Strategic Approach (4th Editio...
Physics
ISBN:9780134609034
Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:PEARSON
Speed Distance Time | Forces & Motion | Physics | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=EGqpLug-sDk;License: Standard YouTube License, CC-BY