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 2.7, Problem 1JE
Two balls are thrown from a cliff. One is thrown directly up, the other directly down, each with the same initial speed, and both hit the ground below the cliff. Which ball hits the ground at the greater speed: (a) the ball thrown upward, (b) the ball thrown downward, or (c) both the same? Ignore air resistance.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Two snowy peaks are at heights H = 800 m and h = 740 m above the valley between them. A ski run extends between
the peaks, with a total length of 2.91 km and an average slope of 0 = 32° (see the figure). (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?
(a) Number
i
(b) Number i
h
0
Units
Units
0
H
←
A worker on a rooftop is startled by a snake, scoops it with a shovel and throws it down the
building at 16 m/s. What maximum height does the snake attain?
use
A 40 kg skier starts from rest at a height of H = 19 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 27° with the
horizontal. Neglect the effects of air resistance and assume the ramp is frictionless.
End of
H
ramp
(a) What is the maximum height h of his jump above the end of the ramp?
(b) If he increased his weight by putting on a backpack, would h then be greater, less, or the same?
greater
less
the same
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
You microscopically examine scrapings from a case of Acan-thamoeba keratitis. You expect to see a. nothing. b. ...
Microbiology: An Introduction
Examine the graph in Figure 6.3. Note that the growth rate increases slowly until the optimum is reached and th...
Microbiology with Diseases by Body System (5th Edition)
Name the components (including muscles) of the thoracic cage. List the contents of the thorax.
Human Physiology: An Integrated Approach (8th Edition)
Using the South Atlantic as an example, label the beginning of the normal polarity period C that began 2 millio...
Applications and Investigations in Earth Science (9th Edition)
Which one of the following is not a fuel produced by microorganisms? a. algal oil b. ethanol c. hydrogen d. met...
Microbiology: An Introduction
27. Consider the reaction.
Express the rate of the reaction in terms of the change in concentration of each of...
Chemistry: Structure and Properties (2nd 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 ski jumper starts from rest 47.5 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 18.0 m above the ground. Neglect air resistance. (a) What is her speed when she leaves the track? m/s(b) What is the maximum altitude she attains after leaving the track? m(c) Where does she land relative to the end of the track? marrow_forwardWhen you throw a pebble straight up with initial speed 5.0-m/s, it reaches a maximum height H with no air resistance. At what speed should you throw it straight up so it will go 1.7-times as high? Provide your final answer in m/s.arrow_forwardYou drop a ball from your roof of your house. If the ball is 0.8 kg, and the roof is 7 m above the ground, how fast is the ball going when it hits the ground?( no air resistance) 11.7 m/s O 137.2 m/s O 23.1 m/s O 58.5 m/sarrow_forward
- A golfer hits a shot to a green that is elevated 2.50 m above the point where the ball is struck. The ball leaves the club at a speed of 19.5 m/s at an angle of 40.0° above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of the ball just before it lands. V = iarrow_forwardA baseball is projected horizontally with an initial speed of 5.93 m/s from a height of 1.73 m. What is the speed of the baseball when it hits the ground? (Neglect air friction.)arrow_forwardA quarterback throws a ball with an initial speed of 7.35 m/s at an angle of 63.0° above the horizontal. What is the speed of the ball when it reaches 2.20 m above initial throwing point? You can assume air resistance is negligible.arrow_forward
- A ski jumper starts from rest 45.0 m above the ground on a frictionless track and flies off the track at an angle of 45.0° above the horizontal and at a height of 19.5 m above the ground. Neglect air resistance. (a) What is her speed when she leaves the track? m/s (b) What is the maximum altitude she attains after leaving the track? m (c) Where does she land relative to the end of the track?arrow_forwardThree identical rocks are thrown from the top of a building. Rock # 1 is thrown horizontally with a speed of 12 m/s. Rock #2 is thrown straight upward with a speed of 12 m/s. Rock #3 is thrown straight downward with a speed of 12 m/s. There is no air resistance and none of the rocks come into contact with anything before they hit the ground at the base of the building. Compare the rocks' speeds just before they strike the ground at the base of the building by ranking them from fastest to slowest. O Rock #1, Rock #3, Rock #2 O Rock #3, Rock #2, Rock #1 O Rocks #1 and #2 have the same final speed and #3 is slowest. O Rock #2 is the fastest while Rocks #1 and #3 are tied for slowest. O All three rocks have the same final speed.arrow_forwarda ball which is dropped from the top of a building strikes the ground with a speed of 30m/s. assume air resistance can be ignored . what is the height of the building?arrow_forward
- You are on an espionage mission to drop a tracker from the top of a building, 53.6 m above from the ground, on your target, who is 1.50 m tall and walking at a constant speed of 2.19 m/s. If you wish to drop the tracker on your target's head, where should the target be when you release the tracker? Assume that there is no air drag. Express answers in meters. Hint: This question involves Free Fall (step 1) and General Uniform Accelerated Motion (step 2).arrow_forwardA man stands on the roof of a 15.0-m-tall building and throwsa rock with a speed of 30.0 m/s at an angle of 33.0 above the horizontal.Ignore air resistance. Calculate the maximum height above the roof that the rock reachesarrow_forwardA golfer hits a shot to a green that is elevated 3.40 m above the point where the ball is struck. The ball leaves the club at a speed of 18.2 m/s at an angle of 30.0° above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of the ball just before it lands. V = i îarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
University Physics Volume 1
Physics
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:OpenStax - Rice University
Position/Velocity/Acceleration Part 1: Definitions; Author: Professor Dave explains;https://www.youtube.com/watch?v=4dCrkp8qgLU;License: Standard YouTube License, CC-BY