Physical Science
11th Edition
ISBN: 9780077862626
Author: Bill Tillery, Stephanie J. Slater, Timothy F. Slater
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 2, Problem 15AC
The basic difference between instantaneous and average speed is that
a. instantaneous speed is always faster than average speed.
b. average speed is for a total distance over a total time of trip.
c. average speed is the sum of two instantaneous speeds, divided by 2.
d. the final instantaneous speed is always the fastest speed.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A physics student took a 4 hours car trip to visit a friend. In the first hour, he traveled 100 km at constant speed. In the two hours, he stopped after his car developed some trouble. In the last hour, he traveled 90 km.What was his average speed during
a. first hour
b. the last two hours
c. the entire trip?
I left my house at 7 AM, drove 1100 km and arrived in South Carolina at 6 PM. My speed at 3 PM was:
A. unknown, there's not enough info
B. 105 km/h, that's the speed limit
C. 77 km/h
D. 100 km/h
A car goes 50mile north and 50 miles east and 40miles south. It takes half an hour to complete the journey.
What is the average speed of the car?
a.
280mph
b.
140mph north
c.
280mph west
d.
140mph
Chapter 2 Solutions
Physical Science
Ch. 2 - 1. A straight-line distance covered during a...Ch. 2 - 2. How fast an object is moving in a particular...Ch. 2 -
3. Acceleration occurs when an object undergoes...Ch. 2 - Prob. 4ACCh. 2 -
5. A car moving at 60 km/h comes to a stop in 10...Ch. 2 -
6. According to Galileo, an object moving without...Ch. 2 -
7. In free fall, an object is seen to have a (an)...Ch. 2 -
8. A tennis ball is hit, causing it to move...Ch. 2 -
9. A quantity of 5 m/s2 is a measure of...Ch. 2 - 10. An automobile has how many different devices...
Ch. 2 - 11. Ignoring air resistance, an object falling...Ch. 2 - 12. Ignoring air resistance, an object falling...Ch. 2 - 13. Two objects are released from the same height...Ch. 2 - 14. A ball rolling across the floor slows to a...Ch. 2 - 15. The basic difference between instantaneous and...Ch. 2 - 16. Does any change in the motion of an object...Ch. 2 - 17. A measure of how fast your speed is changing...Ch. 2 - 18. Considering the forces on the system of you...Ch. 2 - 19. Newton’s first law of motion describes
a. the...Ch. 2 - 20. You are standing freely on a motionless...Ch. 2 - 21. Mass is measured in kilograms, which is a...Ch. 2 - 22. Which metric unit is used to express a measure...Ch. 2 - 23. Newton’s third law of motion states that...Ch. 2 - 24. If you double the unbalanced force on an...Ch. 2 - 25. If you double the mass of a cart while it is...Ch. 2 - 26. Doubling the distance between the center of an...Ch. 2 - 27. If a ball swinging in a circle on a string is...Ch. 2 - 28. A ball is swinging in a circle on a string...Ch. 2 - 29. Suppose the mass of a moving scooter is...Ch. 2 - 30. Two identical moons are moving in identical...Ch. 2 - 31. Which undergoes a greater change of momentum,...Ch. 2 - Prob. 32ACCh. 2 - 33. An astronaut living on a space station that is...Ch. 2 - Prob. 34ACCh. 2 -
35. You are at rest with a grocery cart at the...Ch. 2 -
36. Once again you are at rest with a grocery...Ch. 2 -
37. You are moving a grocery cart at a constant...Ch. 2 -
38. You are outside a store, moving a loaded...Ch. 2 -
39. Neglecting air resistance, a ball in free...Ch. 2 -
40. From a bridge, a ball is thrown straight up...Ch. 2 -
41. After being released, a ball thrown straight...Ch. 2 -
42. A gun is aimed horizontally at the center of...Ch. 2 -
43. According to the third law of motion, which...Ch. 2 -
44. A small sports car and a large SUV collide...Ch. 2 -
45. Again consider the small sports car and large...Ch. 2 -
46. An orbiting satellite is moved from 10,000 to...Ch. 2 -
47. Newton’s law of gravitation considers the...Ch. 2 - 1. An insect inside a bus flies from the back...Ch. 2 - 2. Disregarding air friction, describe all the...Ch. 2 -
3. Can gravity act in a vacuum? Explain.
Ch. 2 -
4. Is it possible for a small car to have the...Ch. 2 -
5. Without friction, what net force is needed to...Ch. 2 -
6. How can there ever be an unbalanced force on...Ch. 2 -
7. Why should you bend your knees as you hit the...Ch. 2 -
8. Is it possible for your weight to change while...Ch. 2 - Prob. 9QFTCh. 2 - 10. Suppose you are standing on the ice of a...Ch. 2 - 11. A rocket blasts off from a platform on a space...Ch. 2 - 12. An astronaut leaves a spaceship that is moving...Ch. 2 - 1. What are the significant similarities and...Ch. 2 - 2. What are the significant similarities and...Ch. 2 -
3. Compare your beliefs and your own reasoning...Ch. 2 -
5. Why is it that your weight can change by...Ch. 2 -
6. Assess the reasoning that Newton's first law...Ch. 2 - 1. What was the average speed in km/h of a car...Ch. 2 - 2. What was the average speed in km/h of a boat...Ch. 2 -
3. How much would an 80.0 kg person weigh (a) on...Ch. 2 -
4. What force is needed to give a 6,000 kg truck...Ch. 2 -
5. What is the resulting acceleration when a 300...Ch. 2 -
6. A boat moves 15.0 km across a lake in 30.0...Ch. 2 -
7. If the Sun is a distance of 1.5 108 km from...Ch. 2 -
8. How many meters away is a cliff if an echo is...Ch. 2 -
9. A car has an average speed of 80.0 km/h for 1...Ch. 2 - 10. What is the acceleration of a car that moves...Ch. 2 - 11. How much time is needed for a car to...Ch. 2 - 12. A rocket moves through outer space at 11,000...Ch. 2 - 13. Sound travels at 348 m/s in the warm air...Ch. 2 - 14. How many hours are required for a radio signal...Ch. 2 - 15. A rifle is fired straight up, and the bullet...Ch. 2 - 16. A rock thrown straight up climbs for 2.50 s,...Ch. 2 - 17. An object is observed to fall from a bridge,...Ch. 2 - 18. A ball dropped from a window strikes the...Ch. 2 - 19. Find the resulting acceleration from a 300 N...Ch. 2 - 20. What is the momentum of a 30.0 kg shell fired...Ch. 2 - 21. What is the momentum of a 39.2 N bowling ball...Ch. 2 - 22. A 30.0 kg shell is fired from a 2,000 kg...Ch. 2 - 23. An 80.0 kg man is standing on a frictionless...Ch. 2 - 24. (a) What is the weight of a 5.00 kg backpack?...Ch. 2 - 25. What net force is required to accelerate a...Ch. 2 - 26. What forward force must the ground apply to...Ch. 2 - 27. A 1,000.0 kg car accelerates uniformly to...Ch. 2 - 28. A net force of 3,000.0 N accelerates a car...Ch. 2 - 29. How much does a 60.0 kg person weigh?
Ch. 2 - 30. What tension must a 50.0 cm length of string...Ch. 2 - 31. A 200.0 kg astronaut and equipment move with a...
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
- Tectonic plates are large segments of the Earth's crust that move slowly. Suppose that one such plate has an average speed of 4.0 cm/year. (a) What distance does it move in 1 s at this speed? (b) What is its speed in kilometers per million years?arrow_forward(a) A car speedometer has a 5.0% uncertainty. What is the range of possible speeds when it reads 90 km/h? (b) Convert this range to miles per hour. (1Km=0.6214)arrow_forwardA distance with two significant figures divided by a time interval with three significant figures equals an average speed. How many significant figures does the average speed have?arrow_forward
- A car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it exceeding the 90 km/h speed limit?arrow_forwardThe speed limit on some interstate highways is roughly 100 km/h. (a) What is this in meters per second? (b) How many miles per hour is this?arrow_forward(a) Find a conversion factor to convert from miles per hour to kilometers per hour. (b) For a while, federal law mandated that the maximum highway speed would be 55 mi/h. Use the conversion factor from part (a) to find the speed in kilometers per hour. (c) The maximum highway speed has been raised to 65 mi/h in some places. In kilometers per hour, how much of an increase is this over the 55-mi/h limit?arrow_forward
- (a) Find a conversion factor to convert from miles per hour to kilometers per hour. (b) For a while, federal law mandated that the maximum highway speed would be 55 mi/h. Use the conversion factor from part (a) to find the speed in kilometers per hour. (c) The maximum highway speed has been raised to 65 mi/h in some places. In kilometers per hour, how much of an increase is this over the 55-mi/h limit?arrow_forwardA car is traveling at a speed of 33 m/s. (a) What is its speed in kilometers per hour? (b) Is it exceeding the 90 km/h speed limit?arrow_forward(a) Calculate Earth's average speed relative to the Sun. (b) What is its average velocity over a period of one year?arrow_forward
- A garden snail named Archie, owned by Carl Branhorn of Pott Row, England, covered a 33-cm course in 2.0 min at the 1995 World Snail Racing Championships, held in Longhan, England (Fig. P1.13). Determine Archies average speed Sav = d/t in the appropriate SI units.arrow_forwardA person lakes a trip, driving with a constant speed of 89.5 km/h, except, for a 22.0-min rest stop. If the persons average speed is 77.8 km/h, (a) how much time is spent on the trip and (b) how far does the person travel?arrow_forwardA student drives the 100-mi trip back to campus after spring break and travels with an average speed of 52 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_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Physics for Scientists and Engineers with Modern ...
Physics
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
An Introduction to Physical Science
Physics
ISBN:9781305079137
Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher:Cengage Learning
Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY