## Solutions for College Physics

Problem 2RQ:

Review Question 2.2 Is the following statement true? If an objects velocity change arrows point to...Problem 3RQ:

Review Question 2.3 Eugenia says that to find the v arrow on a motion diagram you need to subtract...Problem 4RQ:

Review Question 2.4 Jade went hiking between two camps that were separated by about 10 km. She hiked...Problem 5RQ:

Review Question 2.5 A position- versus-time graph representing a moving object is shown in Figure...Problem 6RQ:

Review Question 2.6 Why is the following statement true? Displacement is equal to the area between a...Problem 7RQ:

Review Question 2.7 (a) Give an example in which an object with negative acceleration is speeding...Problem 8RQ:

Review Question 2.8 Explain qualitatively, without algebra, why the displacement of an object moving...Problem 9RQ:

Review Question 2.9 A cars motion with respect to the ground is described by the following function:...Problem 1MCQ:

Match the general elements or physics knowledge (left) with the appropriate examples (right). Model...Problem 2MCQ:

Which group of quantities below consists only of scalar quantities? a. Average speed, displacement,...Problem 3MCQ:

Which of the following are examples of time interval? (1) I woke up at 7 a.m. (2) The lesson lasted...Problem 4MCQ:

A student said. The displacement between my dorm and the lecture hall is 1 kilometer. Is he using...Problem 5MCQ:

An object moves so that its position depends on time as x=+12m(4m/s)t+(1m/s2)t2. Which statement...Problem 6MCQ:

6. Choose the correct approximate velocity-versus-time graph for the following hypothetical motion:...Problem 7MCQ:

Figure Q2.7b shows the position-versus-time graph for a small red dot that was moving along the...Problem 8MCQ:

Oilver takes two identical marbles and drops the first one from a certain height. A short time...Problem 9MCQ:

9. Your car is traveling west at 12 m/s. A stoplight (the origin of the coordinate axis) to the west...Problem 10MCQ:

Which velocity-versus-time graph in Figure Q2.10 best describes the motion of the car in the...Problem 11MCQ:

11. Azra wants to determine the average speed of the high-speed train that operates between Paris...Problem 12MCQ:

A sandbag hangs from a rope attached to a rising hot air balloon. The rope connecting the bag to the...Problem 13MCQ:

An apple falls from a tree. It hits the ground at a speed of about 5.0 m/s. What is the approximate...Problem 14MCQ:

14. You have two small metal balls. You drop the first ball and throw the other one in the downward...Problem 15MCQ:

Which of the graphs in Figure Q2.15 represent the motion of an object that starts from rest and...Problem 16MCQ:

16. You throw a small ball upward and notice the time it takes to come back. If you then throw the...Problem 17CQ:

Figure Q2.17 shows vectors E,F, and G. Draw the following vectors using rules for graphical addition...Problem 18CQ:

Peter is cycling along an 800-m straight stretch of a track. His speed is 13 m/s. Choose all of the...Problem 19CQ:

In what reasonable ways can you represent or describe the motion of a car traveling from one...Problem 20CQ:

What is the difference between speed and velocity? Between path length and distance? Between...Problem 21CQ:

21. What physical quantities do we use to describe motion? What does each quantity characterize?...Problem 22CQ:

22. Devise stories describing each of the motions shown in each of the graphs in Figure Q2.22....Problem 23CQ:

23. For each of the position-versus-time graphs in Figure Q2.23, draw velocity-versus-time graphs...Problem 24CQ:

Figure Q2.24 shows velocity-versus-time graphs for two objects. A and B. Draw motion diagrams that...Problem 26CQ:

26. Can an object at one instant of time have zero velocity and nonzero acceleration? If so, give an...Problem 27CQ:

27. Your little sister has a battery-powered toy truck. When the truck is moving, how can you...Problem 28CQ:

You throw a ball upward. Your friend says that at the top of its flight the ball has zero velocity...Problem 1P:

A car starts at rest from a stoplight and speeds up. It then moves at constant speed for a while....Problem 2P:

* You are an observer on the ground. (a) Draw two motion diagrams representing the motions of two...Problem 3P:

3. * A car is moving at constant speed on a highway. A second car catches up and passes the first...Problem 4P:

4. * A hat falls off a man’s head and lands in the snow. Draw a motion diagram representing the...Problem 5P:

5 Figure P2.5 shows several displacement vectors that are all in the (x, y) plane. (a) List all...Problem 6P:

6. Figure P.26 shows an incomplete motion diagram for an object (a) For each pair of adjacent...Problem 7P:

7. * You drive 100 Km east do some sightseeing and then turn around and drive 50 Km west where you...Problem 8P:

* Choose an object or reference and a set of coordinate axes associated with it. Show how two people...Problem 9P:

The scalar x-component of a displacement vector for a trip is -70 km. Represent the trip using a...Problem 10P:

10. * You recorded your position with respect to the front door of your house as you walked to the...Problem 11P:

* You need to determine the time interval (in seconds) needed for light to pass an atomic nucleus....Problem 12P:

A speedometer reads 65 ml/h. (a) Use as many different units as possible to represent the speed of...Problem 13P:

13. Convert the following record speeds so that they are in ml/h, km/h. and m/s. (a) Australian...Problem 15P:

15. * BIO A kidnapped banker looking through a slit in a van window counts her heartbeats and...Problem 16P:

16 * Some computer scanners scan documents by moving the scanner head with a constant speed across...Problem 18P:

18. * Your friend’s pedometer shows that he took 17,000 steps in 2.50 h during a hike. Determine...Problem 19P:

During a hike, two friends were caught in a thunderstorm. Four seconds after seeing lightning from a...Problem 20P:

20. Light travels at a speed of m/s in a vacuum. The approximate distance between Earth and the Sun...Problem 21P:

21. Proxima Centauri is light-years from Earth. Determine the length of 1 light-year and convert the...Problem 22P:

* Spaceships traveling to other planets in the solar system move at an average speed of 1.1104 m/s....Problem 23P:

23. ** Figure P2.23 shows a velocity-versus-time graph for the bicycle trips of two friends with...Problem 24P:

24. * Table 2.9 shows position and time data for your walk along a straight path. (a) Tell...Problem 25P:

25. * Table 2.10 shows position and time data for your friend’s bicycle ride along a straight bike...Problem 26P:

26 * You are walking to your physics class at speed 1.0 m/s with respect to the ground. Your friend...Problem 27P:

* Gabriele enters an east-west straight bike path at the 3.0-km mark and rides west at a constant...Problem 28P:

* Jim is driving his car at 32 m/s (72 mi/h) along a highway where the speed limit is 25 m/s (55...Problem 29P:

29. * You hike two-thirds of the way to the top or a hill at a speed or 3.0 ml/h and run the final...Problem 30P:

30. * Olympic champion swimmer Michael Phelps swam at an average speed of 2.01 m/s during the first...Problem 31P:

31. * A car makes a 100-Km trip. it travels the first 50 Km at an average speed of 50 km/h. how fast...Problem 32P:

* Jane and Bob see each other when 100m apart. They are moving forward each other, Jane at constant...Problem 34P:

34. A car starts from rest and reaches the speed of 10 m/s in 30 s. What can you determine about the...Problem 35P:

A truck is traveling east at +16 m/s (a) The driver sees that the road is empty and accelerates at...Problem 36P:

36. Bumper car collision on a bumper car ride, friends smash their cars into each other (head-on),...Problem 37P:

A bus leaves an intersection accelerating at +2.0 m/s2. Where is the bus after 5.0 s? What...Problem 38P:

A jogger is running at +4.0 m/s when a bus passes her. The bus is accelerating from +16.0 m/s to +...Problem 39P:

39. * The motion of a person as seen by another person is described by the equation (a) Represent...Problem 40P:

While cycling at a speed of 10 m/s, a cyclist starts going downhill with an acceleration of...Problem 41P:

* EST To his surprise, Daniel found that an egg did not break when he accidentally dropped it from a...Problem 42P:

42. BIO Squid propulsion Lolliguncula brevis squid use a form of jet propulsion to swim-they eject...Problem 43P:

Dragster record on the desert In 1977, Kitty ONell drove a hydrogen peroxide-powered rocket dragster...Problem 44P:

* Imagine that a sprinter accelerates from rest to a maximum speed of 10.8 m/s in 1.8 s. In what...Problem 45P:

45. ** Two runners are running next to each other when one decides to speed up at constant...Problem 46P:

46. * Meteorite hits car in 1992, a 14-kg meteorite struck a car in Peekskill, NY, leaving a...Problem 47P:

47. BIO Froghopper jump A spittlebug called the froghopper (Philaenus spumarius) is believed to be...Problem 48P:

48. Tennis serve The fastest server in women’s tennis is Sabine Lisicki, who recorded a serve of 131...Problem 49P:

49. * Shot from a cannon in 1998, David “Cannonball” Smith set the distance record for being shot...Problem 50P:

Col. John Stapps final sied run Col. John Stapp led the U.S. Air Force Acro Medical Laboratorys...Problem 51P:

51. * Sprinter Usain Bolt reached a maximum speed of 11.2 m/s in 2.0 s while running the 100-m dash....Problem 52P:

** Imagine that Usain Bolt can reach his maximum speed in 1.7s. What should be his maximum speed in...Problem 53P:

* A bus is moving at a speed of 36 km/h. How far from a bus stop should the bus start to slow down...Problem 54P:

* EST You want to estimate how fast your car accelerates. What information can you collect to answer...Problem 55P:

* In your car, you covered 2.0 m during the first 1.0 s, 4.0 m during the second 1.0 s, 6.0 m during...Problem 56P:

56. (a) Determine the acceleration of a car in which the velocity changes from -10m/s to -20m/s in...Problem 57P:

You accidentally drop an eraser out the window of an apartment 15 m above the ground. (a) How long...Problem 58P:

58. * What is the average speed of the eraser in the previous problem from the instant it is...Problem 59P:

59. You throw a tennis ball straight upward. The initial speed is about 12m/s. Say everything you...Problem 60P:

60. While skydiving, your parachute opens and you slow from 50.0 m/s to 8.0 m/s in 0.80s. Determine...Problem 61P:

* After landing from your skydiving experience, you are so excited that you throw your helmet...Problem 62P:

* You are standing on the rim of a canyon. You drop a rock and in 7.0 s hear the sound of it hitting...Problem 63P:

63. * You are doing an experiment to determine your reaction time. Your friend holds a ruler. You...Problem 64P:

EST Cliff divers Divers in Acapulco fall 36m from a cliff into the water. Estimate their speed when...Problem 65P:

65. * Galileo dropped a light rock and a heavy rock from the Learning Tower of Pisa, which is about...Problem 66P:

* A person holding a lunch bag is moving upward in a hot air balloon at a constant speed of 7.0 m/s....Problem 67P:

* A parachutist falling vertically at a constant speed of 10m/s drops a penknife when 20 m above the...Problem 68P:

A diagram representing the motion of two cars is shown in Figure P2.68. The number near each dot...Problem 69P:

Use the velocity-versus-time graph lines in Figure P2.69 to determine the change in the position of...Problem 71P:

* While babysitting their younger brother, Chrisso and Devin are playing with toys. They notice that...Problem 72P:

72. ** An object moves so that its position changes in the following way: . (a) What kind of motion...Problem 74P:

* Two cars on a straight road at time zero are beside each other. The first car, traveling at speed...Problem 75P:

75. * Oliver drops a tennis ball from a certain height above a concrete floor. Figure P2.75 shows...Problem 76P:

76. * BIO EST Water striders Water striders are insects that propel themselves on the surface of...Problem 77P:

77. You are traveling in your car at 20 m/s a distance of 20 m behind a car traveling at the same...Problem 78P:

* You are driving a car behind another car. Both cars are moving at speed 80 km/h. What minimum...Problem 79P:

79. * A driver with a 0.80-s reaction time applies the brakes, causing the car to have 7.0-m/s2...Problem 80P:

80. ** Some people in a hotel are dropping water balloons from their open window onto the ground...Problem 82P:

82 ** EST A bottle rocket burns for 1.6s. After it stops burning, it continues moving up to a...Problem 83P:

83. * Data from state driver’s manual The state driver’s manual lists the reaction distances,...Problem 85P:

85. * Car A is heading east at 30 m/s and Car B is heading west at 20 m/s. Suddenly, as they...Problem 86RPP:

BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact...Problem 87RPP:

BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact...Problem 88RPP:

BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact...Problem 89RPP:

BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact...Problem 90RPP:

BIO Head injuries in sports A research group at Dartmouth College has developed a Head Impact...Problem 91RPP:

Automatic sliding doors The first automatic sliding doors were described by Hero of Alexandria...Problem 92RPP:

Automatic sliding doors The first automatic sliding doors were described by Hero of Alexandria...Problem 93RPP:

Automatic sliding doors The first automatic sliding doors were described by Hero of Alexandria...Problem 94RPP:

Automatic sliding doors The first automatic sliding doors were described by Hero of Alexandria...# Browse All Chapters of This Textbook

Chapter 2 - Kinematics: Motion In One DimensionChapter 3 - Newtonian MechanicsChapter 4 - Applying Newton’s LawsChapter 5 - Circular MotionChapter 6 - Impulse And Linear MomentumChapter 7 - Work And EnergyChapter 8 - Extended Bodies At RestChapter 9 - Rotational MotionChapter 10 - Vibrational MotionChapter 11 - Mechanical Waves

Chapter 12 - GasesChapter 13 - Static FluidsChapter 14 - Fluids In MotionChapter 15 - First Law Of ThermodynamicsChapter 16 - Second Law Of ThermodynamicsChapter 17 - Electric Charge, Force, And EnergyChapter 18 - The Electric FieldChapter 19 - Dc CircuitsChapter 20 - MagnetismChapter 21 - Electromagnetic InductionChapter 22 - Reflection And RefractionChapter 23 - Mirrors And LensesChapter 24 - Wave OpticsChapter 25 - Electromagnetic WavesChapter 26 - Special RelativityChapter 27 - Quantum OpticsChapter 28 - Atomic PhysicsChapter 29 - Nuclear PhysicsChapter 30 - Particle Physics

# Sample Solutions for this Textbook

We offer sample solutions for College Physics homework problems. See examples below:

Chapter 2, Problem 1RQChapter 3, Problem 1RQChapter 4, Problem 1RQChapter 5, Problem 1RQChapter 6, Problem 1RQChapter 7, Problem 1RQIntroduction: Center of mass is a point where the complete mass of any object is said to be...Chapter 9, Problem 1RQChapter 10, Problem 1RQ

Chapter 11, Problem 1RQIntroduction: The following mechanisms can be logically constructed to understand the reason behind...Chapter 13, Problem 1RQIntroduction: Bernoulli’s principle states that fluids moving at a faster velocity have lesser...Chapter 15, Problem 1RQIntroduction: Energy of an isolated system, such as the universe always remains constant, as stated...Chapter 17, Problem 1RQChapter 18, Problem 1RQChapter 19, Problem 1RQChapter 20, Problem 1RQChapter 21, Problem 1RQIntroduction: Experimentally, it has been observed that, the projection on the wall will be upside...Chapter 23, Problem 1RQChapter 24, Problem 1RQChapter 25, Problem 1RQChapter 26, Problem 1RQIntroduction: Planck’s hypothesis stated that an accelerated charged particle can radiate an...Introduction: The Rutherford atomic model is also known as the planetary or nuclear model of an...Introduction: Rutherford, in 1899, conducted an experiment in which he set up two parallel metal...Introduction: Beta decay is referred to as the transformation of protons into neutrons and...

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