ap physics 1 assignments

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AP®︎/College Physics 1

Welcome to ap/college physics 1, unit 1: kinematics and introduction to dynamics, unit 2: newton's laws, unit 3: circular motion and gravitation, unit 4: energy and momentum, unit 5: simple harmonic motion and rotational motion.

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AP® Physics 1A

Course description.

The same laws of Physics are used to describe the behaviors of everything from small atoms, to enormous galaxies. 

With new discoveries come an improved understanding and appreciation of the universe we live in as well as great advancements in technology that save lives and improve the quality of lives around the world. These are some of the reasons people like us choose to study Physics.

The AP Physics 1A course uses inquiry-based lessons that focus on experimentation to develop your understanding of important concepts in Kinematics, Dynamics, Gravitation, Energy, and Momentum. With inquiry-based lessons, students begin to study a topic by making observations and discover natural phenomena. Next, students develop, test, and apply models to fit the observations. In this course students create and use multiple representations of physical processes, design investigations, solve multi-step problems, and reflect on learning using practice quizzes and self-assessment rubrics. In most labs, students use a variety of materials at home to collect data. While completing lessons, students use graphing calculators and online interactive simulations, an interactive notebook, practice quizzes and graded assignments.

Course Objectives

The course will teach AP Physics 1 topics (see page 17, 36). We highly recommend that you read the College Board’s AP Physics 1 Course Overview and AP Physics 1 Course Description before beginning this course.

Required Course Materials

You will need the following materials for this course:

• Scientific or graphing calculator
• A notebook dedicated for this course.
• Pens and pencils- at least three colors (e.g. black, blue, and red)
• You may purchase your own lab materials or contact UTHS or a school in your area to use lab materials. Open and read the list of  lab materials (Links to an external site.)  required for this course.
• The  College Physics for the AP Physics 1 Course   (Links to an external site.) textbook is required for this course. NOTE:  Make sure the ISBN is an exact match to ensure you have the correct textbook.

College Physics for the AP Physics 1 Course Authors:  Stewart, Freedman, Ruskell, and Kesten Bedford, Freeman & Worth High School Publishers, Second Edition, 2019 ISBN: 9781319100971

Course Organization

Each semester course includes 5 units (about 4 lessons per unit), text-based and video-based instruction, interactive activities, lab activities, practice quizzes, 15 graded assignments, and 1 final exam.

Final Examination

The final examination is comprehensive; it covers the material from all 5 units. To pass the course, you must receive a grade of 70 percent or better. You can apply to take the Final Exam after 100 percent of your graded assignments have been submitted.

Format:  Multiple-choice, online Time Allowed:  3 hours Materials Allowed:  Writing utensils, calculator, UTHS approved printed materials

Semester Topics

Unit 1:  Kinematics

Unit 2:  Dynamics

Unit 3:  Circular Motion and Gravitation

Unit 4:  Energy

Unit 5:  Momentum

AP Physics 1 Assignment - Forces

Reading :  Chapter 4, sections 5.1 & 5.2, Open Stax College Physics; Chapters 3 & 4, Etkina

Objectives/HW

Homework problems.

1.       Using Newton’s Laws explain why you must push harder on the pedals of a single-speed bicycle to start it moving than to keep it moving with a constant velocity.

2.       Suppose you have a nearly empty jar of salsa that you want to pour into a bowl.  Of course you will turn the jar upside down – but sometimes this is not enough to get the salsa out of the jar.  Usually you will end up not only turning the jar over but also shaking it up and down.  Using Newton’s Laws explain what factors cause the salsa to come out of the jar.

3.       The Pioneer 10 spacecraft has left our Solar System and is traveling at a speed of 29,000 mph (and has been doing so for years).  Explain why this object is moving so fast although it ran out of fuel long ago.

4.       If you are in a car that is struck from behind, you can receive a serious neck injury called whiplash.  (a) Using Newton’s Laws explain what happens to the person’s head.  (b) Using Newton’s Laws explain how a headrest helps to reduce whiplash injuries.

5.       When a rocket is launched, the thrust of its engines is a constant force as it burns fuel and moves away from Earth. However, as the flight progresses, its rate of acceleration is not constant, but actually increases .  Explain using Newton’s Laws.

6.       A net force of 15 0 N causes a certain person to accelerate 1.20 m/s 2 .  Determine the person’s mass.

7.       A certain car (Mazda Miata) has a mass of 1080 kg and can go from zero to 26.8 m/s (0 to 60 mph) in 7.9 seconds.  What magnitude net force must act on the car to cause this?

8.       The Deep Space 1 spacecraft’s ion engine produced an average thrust of 37 mN and was fired for a total of 16000 hours.  The mass of the spacecraft was 450 kg.  (a) Assuming this thrust was the only force acting on it what was the spacecraft’s rate of acceleration?  (b) By how much was its velocity changed over this time period?

9.       Two forces act on a falling skydiver with mass 10 0 kg:  a downward gravity force and an upward air resistance (friction) force.  Suppose the net force on the skydiver is 67 0 N, 270.0 ° – this means the gravity force is 67 0 N greater than the friction force.  (a) Determine the resulting acceleration.  After the parachute opens the acceleration is 5.0 m/s 2 , 90.0 ° .  (b) Determine the net force at this point.  (c) Which force is larger now and by how much?

10.   Starting and ending at rest, an object of mass m is caused to move a certain distance d in an amount of time t .  To make this happen, what minimum amount of force, F , must act – first accelerating and then decelerating the object?  Derive an expression for F .

11.   (a) Compare the amount of force needed to lift a 10 kg rock on the Earth and on the Moon – which is greater and why?  (b) Now compare the amount of force needed to throw the same rock horizontally at the same speed in the two locations.  Explain.

12.   A 95.0 kg (209 lb) boxer has matches in the Canal Zone ( g = 9.782 m/s 2 ) and in the Arctic Circle ( g = 9.832 m/s 2 ).  (a) What is his mass in the Canal Zone?  (b) What is his weight in the Canal Zone?  (c) What is his mass in the Arctic Circle?  (c) What is his weight in the Arctic Circle?  (e) Based on this, should a scale or a balance be used for the “weigh-in”?

13.   Suppose a certain motorcycle weighs 2450 N.  What is its mass in kilograms?

14.   A 4500 kg helicopter accelerates upward at 2.0 m/s 2 .  What lift force is exerted on the propellers by the air?

15.   Safety engineers estimate that an elevator “car” can hold 20 persons of 75 kg average mass.  The car itself has a mass of 500 kg.  Tensile strength tests show that the cable supporting the car can tolerate a maximum force of 29.6 kN.  What is the greatest acceleration that the elevator’s motor can produce in the fully loaded car without breaking the cable?

16.   An elevator car that weighs 3.0 kN is accelerated upward at 1.3 m/s 2 .  What force does the cable exert to give it this acceleration?

17.   A rocket with weight W is sitting vertically on a launch pad.  The rocket’s engine fires to produce a thrust T , producing liftoff.  Derive expressions for the following in terms of W , T , and any appropriate constants. (a) What magnitude net force acts on the rocket just as it leaves the ground?  (b) What is the acceleration of the rocket?

18.   A person throws a ball with mass 175 g.  If the person’s hand exerts a force of 5.00 N, 50.0 ° , what will be the resulting acceleration of the ball?  (You must include the effect of gravity.)

19.   Mules are smart but stubborn.  Once upon a time a particularly smart and particularly stubborn mule refused to pull its owner’s cart and gave the following argument:  “I refuse to pull the cart because it is impossible to do so according to Newton’s laws of motion.  According to the 2 nd Law it is necessary to have a net force in order for the cart to accelerate.  According to the 3 rd Law no matter how hard I pull the cart forward , the cart will pull an equal amount backward and therefore the net force will be zero and the cart will not move.  Even if I could pull a million Newtons forward, the cart would pull a million Newtons backward and so I refuse to even try!”  What is the flaw in the mule’s argument?

20.   When you drop a 0.40 kg apple, Earth exerts a force on it that accelerates it toward the Earth’s surface.  Assuming Newton’s Laws are true (and they are!) the Earth must also accelerate toward the apple.  (a) Given its mass is 5.974 x 10 24 kg, determine the rate at which the Earth accelerates upward toward the falling apple.  (b) Determine how far the Earth moves up during the time that the apple moves down 1.0 m.

21.   A 115 kg astronaut on a space walk pushes against her space capsule that has mass 2250 kg.  The astronaut accelerates 1.50 m/s 2 , 0 ° .  (a) Find the force exerted on the astronaut.  (b) Find the force exerted on the capsule.  (c) Find the acceleration of the capsule.

22.   Suppose a 20 0 g ball is in contact with the floor.  (a) Determine the normal force the floor exerts on the ball when it is at rest.  (b) Determine the normal force the floor exerts on the ball when it is bouncing and accelerating upward 10 0 m/s 2 .  (c) Determine the force that the ball exerts on the floor as it is bounces.  (d) Find the amount of normal force if the ball bounces off the ceiling with downward acceleration 10 0 m/s 2 .

23.   A person stands on a bathroom scale in an elevator at rest on the ground floor of a building.  The scale then reads 836 N.  As the elevator begins to move upward, the scale reading briefly increases to 935 N but then returns to 836 N.  As the elevator reaches the 20 th floor, the scale reading briefly drops to 782 N and then once again returns to 836 N once it has stopped.  (a) Determine the elevator’s acceleration as its speed increases.  (b) Determine the elevator’s acceleration as its speed decreases.  (c) Explain why the scale reads 836 N for most of the elevator’s trip.

26.   A sled of mass 5 0 kg is pulled horizontally over flat ground.  The static friction coefficient is 0.30, and the sliding friction coefficient is 0.10.  (a) What does the sled weigh?  (b) What minimum amount of force must be applied to the sled in order to start it moving?  (c) What amount of applied force will keep it moving at a constant velocity of 3.0 m/s?  (d) What amount of applied force will accelerate the sled at 3.0 m/s 2 ?

27.   A force of 4 0 N, 18 0 ° accelerates a 5.0 kg block at 6.0 m/s 2 , 18 0 ° along a horizontal surface.  (a) Determine the force of friction acting on the block.  (b) Determine the coefficient of friction.

28.   A 2 0 kg wagon is rolling to the right across a floor.  A person attempts to catch and stop the crate and applies a force of 7 0 N, 180.0 ° on it.  If the coefficient of friction is 0.18, calculate the deceleration rate of the wagon as it is caught.

29.   Two brothers are goofing around on the surface of a frozen lake where μ = 0.050.  The older brother weighs 825 N and the younger weighs 765 N.  The older brother shoves the younger with a force of 85.0 N, 0.0 °   (a) Find the acceleration of the younger brother.  (b) Find the acceleration of the older brother. (c) Find the acceleration of the center of mass of the two-brother system – treat the two brothers as “one object”.

30.   In the bed of the truck is a 15 kg crate for which μ s = 0.20 and μ k = 0.15.  (a) What is the maximum acceleration rate of the truck at which the crate will not slide across the bed?  (b) If the truck exceeds this by accelerating at 4.0 m/s 2 0.0, what will be the crate’s acceleration – both relative to earth and relative to the truck?

31.   A truck with mass 20 0 0 kg tows a boat and trailer of total mass 50 0 kg.  The frictional coefficient for the truck is 0.080 and for the trailer is 0.050 (this is due to “rolling resistance” of the tires).  The force of the truck’s drive wheels pushing backward on the pavement is 3.0 kN.  (a) Determine the acceleration rate of the truck and trailer moving forward together.  (b) Determine the amount of force the truck’s hitch exerts forward on the trailer.

32.   A 275 kg mule pushes backward with its feet 1.50 kN, 180.0 ° on the ground as it pulls a cart forward.  The mule and the cart both accelerate forward 0.500 m/s 2 , 0.0 ° . (a) What force does the mule exert on the cart?  (b) Assuming the coefficient of friction for the cart is 0.25, what is its mass?

33.   The terminal velocity of a baseball falling through air is 43 m/s.  However a baseball batted through air can go well over 50 m/s.  Explain.

34.   A ball is thrown straight up and falls back down and is caught.  Make a careful graph of velocity vs. time that shows the ball rising and falling and that illustrates the effect of air resistance. With zero air resistance (and only then), the time rising and the time falling are equal and the speed at which it is caught is equal to the speed at which it was thrown. But, when air resistance is significant , which time is greater, rising or falling? and which speed is greater, throwing or catching? Refer to your graph to help explain your answer.

35.   A certain ping-pong ball has mass of 2.4 g and a terminal speed of 10.0 m/s as it falls through air.  Suppose the same type of ping-pong ball is then filled with water such that it has a new mass of 21.6 g and it is dropped through the air.  (a) Determine the acceleration of the water-filled ball as it falls at 10.0 m/s through the air.  (b) Determine the terminal speed of the water-filled ball assuming that the air resistance is proportional to the square of the speed.

36.   A 4 0 kg crate is pulled across the ice with a rope.  A force of 1 0 0 N, 3 0 ° is applied by the rope.  Assume friction is negligible.  (a) Determine the acceleration of the crate.  (b) Determine the normal force that the crate exerts on the ice.

37.   A suitcase with mass 18 kg is pulled at a constant speed by a handle that makes an angle θ with the horizontal.  The frictional force on the suitcase is 27 N and the force applied on the handle is 43 N. (a) Determine the value of the angle, θ .  (b) Determine the normal force exerted on the suitcase.

38.   A traffic signal weighs 150 N and hangs above an intersection.  It is supported equally by wires on either side that form an angle of 120.0 ° with each other.  (a) What is the tension in each of these wires?  (b) If the angle between the wires is increased to 140.0 ° , what is the new tension?  (c) Now suppose the left wire is tilted 20.0° from horizontal and the right is tilted 30.0° from horizontal.  Again determine the tension in each wire.

39.   Joe suspends a sign with mass m between two cables.  Cable A is directed at angle θ above horizontal and cable B is horizontal.  Nothing but these two cables supports the sign.  Derive expressions for the tension in each cable in terms of m , θ , and appropriate physical constants. 

40.   A person exerts a force of 175 N, 210.0 ° on a 20.0 kg crate which slides to the left across a level floor where μ = 0.400.  (a) Find the normal force on the crate.  (b) Find the force of friction on the crate.  (c) Find the acceleration of the crate.

41.   A 475 gram box is given a push and it then slides up and back down a ramp with a 35.0 ° incline.  The coefficient of friction is 0.30.  (a) Determine the rate of deceleration as the box slides up the ramp.  (b) Determine the rate of acceleration as the box slides back down the ramp.  (c)  Determine the amount of applied force necessary to push the box up the ramp at a steady speed.

42.   A block initially at rest slides down a ramp of length L that makes an angle of θ with the horizontal.  (a) Derive an equation that predicts the time required for the block to reach the bottom of the ramp in terms of L , θ , g , and μ , the coefficient of friction.  (b) This derived equation has no real solutions for angles θ  ≤ tan –1 ( μ ).  Show algebraically this is the case and explain the physical significance of this – i.e. what does this mean about an actual block on an actual ramp with actual friction?

43.   A snow skier of mass 85.0 kg slides with constant velocity down a slope that makes an angle of 10.0 ° with the horizontal.  (a) What is the coefficient of sliding friction?  (b) If the slope increases to 15.0 ° what will be the skier’s rate of acceleration?

44.   A daredevil motorcyclist of mass 70.0 kg is going to ride his 450.0 kg motorcycle up a ramp 15.0 m long tilted at an angle of 27.0 ° .  The daredevil reaches the cycle’s top speed, 145 km/h, before starting up the ramp.  You are hired as a consultant to analyze the jump.  Based on this information, what do you estimate his velocity will be just as he leaves the ramp?

45.   Suppose a 2.00 kg object is placed on a ramp of inclination 30.0 ° and the coefficients of friction are 0.40 and 0.60. A force of 18.0 N acting parallel to the ramp is not enough to start the object moving up the ramp if it is at rest, but it is enough to accelerate it up the ramp once it is in motion.  (a) Explain and show mathematically why this is true.  (b) Determine the acceleration up the ramp that the 18.0 N force can sustain.  (c) Determine the minimum force parallel to the surface that would start the object moving down the ramp if it is initially at rest.

46.   Choose and solve one of these problems from either text: Open Stax College Physics Problems & Exercises found at end of sections 4.5 – 4.7, 5.1 Etkina, pp. 82 – 83, Chapter 3:  35; pp. 111 - 117, Chapter 4: 17, 24, 27, 29, 30, 33, 45, 47, 54, 75, 82

47.   Choose and solve another one of the following problems listed above

Selected Answers:

6.7 × 10 - 26 m

6.6 × 10 - 25 m/s 2

8.2 × 10 - 5 m/s 2

0.018 m/s 2 , 0.0 °

76.6 mm/s 2 , 180.0 °

0.520 m/s 2 , 180.0 °

0.599 m/s 2 , 0.0 °

0.63 m/s 2 , 27 0 °

0.71 m/s 2 , 30.0°

0.867 m/s 2

1.2 m/s 2 , 9 0 °

1.9 m/s 2 , 180.0 °

2.2 m/s 2 , 0.0 °

2.2 m/s 2 , 90.0 °

5.0 m/s 2 , 9 0 °

6.70 m/s 2 , 270.0 °

8.71 m/s 2 , 270 °

22.0 m/s 2 , 33.4 °

0.38 N, 210°

1.96 N, 90.0 °

22.0 N, 90.0 °

22.0 N, 270.0 °

24.0 N, 90.0 °

24.0 N, 270.0 °

113 N, 0.0 °

173 N, 0.0 °

173 N, 180.0 °

284 N, 90.0 °

340 N, 27 0 °

50 0 N, 90.0 °

1360 N, 0.0 °

3400 N, 9 0 °

53 kN, 9 0 °

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AP Physics 1

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• Welcome to the AP Physics 1 Summer Assignment!  We have so much to do and learn in the coming school year that we just cannot wait to begin! Hopefully, your summer plans include plenty of rest and relaxation. Many of you may be vacationing with family, working a full or part time job, and/or visiting colleges. As you enjoy all of these experiences, take time to "see the science" in them. What do I mean? Well, all of your modes of transportation, swims in the ocean or pool, and sunset watching have something in common! PHYSICS! You need to get excited about it! Of course, you also need to get ready for the serious business of learning about your world, and how the "things" that populate it, and the rest of the universe behave. Thus, the summer assignment...    You have been added to the AP Summer Assignment Course in Schoology.  When you log into Schoology, you should see the course listed.  If you do not, please contact me ASAP at [email protected].  All summer work, with the exception of the lab component, will be completed in Schoology.    The four parts of the summer assignment will comprise 3 independent work grades. Part 1 will be a completion and accuracy grade- this is mainly a review of concepts with which you should already be comfortable. Parts 2 and 3 will be checked for completion and work (you should be able to correctly answer the questions if you really watch the videos and spend some time on this, but it is probably new information to some degree). Part 4 will be graded for completion and accuracy; if you have any questions about it, please email me. IT IS CRITICAL THAT YOU HAVE LOGGERPRO™ ON YOUR LAPTOP!     Finally, please sign up with the Remind system to receive text alerts. You should see the app on this page.         Sincerely,  Mrs. AF Carpinelli    

Additional Links for Summer Assignment

• Sign up for Remind 101:  text @acarpin to 81010        Supplemental Videos:   Quick Algebra Review (solving equations without numbers)   https://youtu.be/pQmkzbjFUAI   Data and Graphing   http://www.youtube.com/watch?v=Yb9DOqTSdJ4&index=4&list=PL3LDyy4TlHrMZfp1xd4lFhOU0lpNfLyUt   Linearization of graphs    https://www.youtube.com/watch?v=09Tzp-p3aJ4   Dan Fullerton's AP Physics 1 Video Lessons ( excellent, organized lessons in all things AP Physics 1) https://www.youtube.com/playlist?list=PLd2HWlWc-MsysWuL9ksneEM8cl5bk3bHH     Kinematics (by Mrs. Hornibrook- these were produced for the AP Physics B course 3 summers ago.)   https://youtu.be/X7pZY6sfLS4   https://youtu.be/xTo4ngFSh_s     https://youtu.be/g9gzkBnjfWM      Here is a link to all of the PHEt simulations (not just physics)- they are fun! Really! Students especially like the projectile motion and lunar lander simulations... http://phet.colorado.edu/en/simulations  

Looking for some summer reading? Here are some REALLY FUN options!

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