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  1. Name: Does the Book Move? An Introductory Friction Problem Category: Dynamics Date Added: 2015-08-19 Submitter: Flipping Physics Determine if the book moves or not and the acceleration of the book. It’s all about static and kinetic friction. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:08 Reading and translating the problem 0:57 5 Steps to help solve any Free Body Diagram problem 1:26 Drawing the Free Body Diagram 2:24 Sum the forces in the y-direction 3:22 Sum the forces in the x-direction 4:56 The answer to part (a) 6:22 Solving part (b) Multilingual? Please help translate Flipping Physics videos! Previous Video: Experimentally Graphing the Force of Friction 1¢/minute Does the Book Move? An Introductory Friction Problem
  2. Name: An Introductory Tension Force Problem Category: Dynamics Date Added: 2015-07-30 Submitter: Flipping Physics Learn how to solve a basic tension force problem with demonstration! Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:00 The Problem Demonstrated 0:29 5 Steps to Solve and Free Body Diagram Problem 0:50 Drawing the Free Body Diagram 2:03 Resolving Tension Force 1 into its components (numbers dependency) 4:00 Introducing the Equation Holster! 5:11 Redraw the Free Body Diagram 5:32 Sum the forces in the y-direction 7:24 Sum the forces in the x-direction 8:29 Demonstrating our solution is correct Multilingual? Please help translate Flipping Physics videos! Next Video: Introduction to Static and Kinetic Friction by Bobby Previous Video: 5 Steps to Solve any Free Body Diagram Problem 1¢/minute An Introductory Tension Force Problem
  3. Name: The Classic Bullet Projectile Motion Experiment Category: Kinematics Date Added: 20 June 2014 - 01:32 PM Submitter: Flipping Physics Short Description: None Provided One bullet is fired horizontally and simultaneously a second bullet is dropped from the same height. Neglecting air resistance and assuming the ground is level, which bullet hits the ground first? Content Times: 0:15 Reading the problem 0:53 Listing the known variables 1:59 Determining the answer 2:37 Demonstrating the answer 3:00 Isn't one moving faster? 3:52 The Review Want View Video
  4. Name: A Range Equation Problem with Two Parts Category: Kinematics Date Added: 19 June 2014 - 01:20 PM Submitter: Flipping Physics Short Description: None Provided Mr.p throws a ball toward a bucket that is 581 cm away from him horizontally. He throws the ball at an initial angle of 55° above the horizontal and the ball is 34 cm short of the bucket. If mr.p throws the ball with the same initial speed and the ball is always released at the same height as the top of the bucket, at what angle does he need to throw the ball so it will land in the bucket? Content Times: 0:14 Reading the problem 1:01 Why we can use the Range Equation 2:15 Listing what we know for the first attempt 3:06 Solving for the initial speed 4:26 Solving for the initial angle 5:45 Putting the ball in the bucket 6:15 There are actually two correct answers 6:44 Getting the ball into the basket Want View Video
  5. Name: Nerd-A-Pult #2 - Another Projectile Motion Problem Category: Kinematics Date Added: 03 June 2014 - 12:29 PM Submitter: Flipping Physics Short Description: None Provided This time in our projectile motion problem, we know the displacement in the y-direciton and we are solving for the displacement in the x-direciton. We could you use the quadratic formula and I even show you how, however, I also show you the way I recommend doing it which avoids the quadratic formula. Content Times: 0:14 Reading the problem 0:55 Comparing the previous projectile motion problem to the current one 1:16 Breaking the initial velocity in to its components 1:44 Listing the givens 2:27 Beginning to solve the problem in the y-direction 3:08 The Quadratic Formula! 5:49 How to solve it without using the quadratic formula. Solve for Velocity Final in the y-direction first 6:59 And then solve for the change in time 8:12 Solving for the displacement in the x-direction 9:01 Showing that it works 9:43 The Review Want View Video
  6. Name: Nerd-A-Pult - An Introductory Projectile Motion Problem Category: Kinematics Date Added: 23 May 2014 - 02:05 PM Submitter: Flipping Physics Short Description: None Provided An introductory projectile motion problem where you have to break the initial velocity vector in to its components before you can work with it. The Nerd-A-Pult is the perfect tool for showing projectile motion. Content Times: 0:02 Introducing the Nerd-A-Pult 0:43 Demonstrating the marshmallow capabilities of the Nerd-A-Pult 1:18 Reading the problem 2:26 Starting to solve the problem 3:03 What do we do with the initial velocity? 3:45 Solving for the initial velocity in the y-direction 4:27 Solving for the initial velocity in the x-direction 5:13 Deciding which direction to start working with 5:38 Solving for the change in time in the x-direction 6:34 Solving for the displacement in the y-direction 7:54 Proving that our answer is correct 8:58 The Review View Video
  7. Name: (Part 1 of 2) An Introductory Projectile Motion Problem with an Initial Horizontal Velocity Category: Kinematics Date Added: 22 May 2014 - 04:49 PM Submitter: Flipping Physics Short Description: None Provided Can you drop a ball from a moving vehicle and get it to land in a bucket? You can using Physics! In this video we solve an introductory projectile motion problem involving an initial horizontal velocity and predict how far in front of the bucket to drop the ball. Content Times: 0:17 Reading the problem. 0:41 Visualizing the problem. 1:18 Translating the problem. 2:31 Converting from miles per hour to meters per second. 3:10 Two common mistakes about projectile motion givens. 4:29 Beginning to solve the problem. 5:13 Solving for the change in time in the y-direction. 6:22 Solving for the displacement in the x-direction. 7:29 Video proof that it works. 8:14 Air resistance? 9:09 In our next lesson... View Video
  8. Name: Introduction to Projectile Motion Category: Kinematics Date Added: 22 May 2014 - 04:44 PM Submitter: Flipping Physics Short Description: None Provided My strategy for solving any projectile motion problem. You need to split the variables in to the x and y directions and solve for time. Sounds simple and it really is, usually. Content Times: 0:11 Review of Linear Motion Examples 0:57 Introducing Projectile Motion! 1:48 Basic strategy for solving any projectile motion problem 2:06 The y-direction (UAM) 3:22 The x-direction (constant velocity) 4:36 How many knowns do you need in each direction? 5:41 What do we usually solve for? 6:12 The Review View Video
  9. Name: Introductory Vector Addition Problem using Component Vectors Category: Kinematics Date Added: 22 May 2014 - 04:40 PM Submitter: Flipping Physics Short Description: None Provided A simple, introductory vector addition problem that combines the concepts of vectors, cardinal directions, tip-to-tail vector addition and component vectors. Content Times: 0:14 Reading and understanding the problem. 1:25 Drawing the Vector Diagram. 2:28 A common mistake about where to place the arrowhead on the Resultant Vector. 3:39 This is NOT a Vector Diagram! 4:34 How NOT to solve the problem. 5:12 Breaking vector B in to its component in the y direction. 6:02 Breaking vector B in to its component in the x direction. 6:52 Redrawing the Vector Diagram using the components of vector B. 7:30 Finding the direction of our Resultant Vector. 8:35 Finding the magnitude of our Resultant Vector. 9:47 Summarizing the entire problem in 27 seconds. 10:19 The review. View Video
  10. Name: Introductory Tip-to-Tail Vector Addition Problem Category: Kinematics Date Added: 22 May 2014 - 04:36 PM Submitter: Flipping Physics Short Description: None Provided This is a very basic introductory to Tip-to-Tail Vector Addition Problem using a motorized toy car that I made. I don't just talk about it in a general sense, I actually show the different vectors being added together. Content Times: 0:16 Problem introduction 0:36 Determining the velocity of the track 1:43 Defining our givens 3:08 Visual representation of our vectors 3:56 Slow Velocity Racer on the track 4:20 Drawing the resultant vector 5:03 Mathematically finding the magnitude of the resultant velocity vector 6:28 Mathematically finding the direction of the resultant velocity vector 8:45 Summarizing and understanding our results 9:20 49 + 42 = 65? 10:57 The Review View Video
  11. Name: Common Free-Fall Pitfalls Category: Kinematics Date Added: 22 May 2014 - 04:32 PM Submitter: Flipping Physics Short Description: None Provided Yes, there are mistakes that many people make when it comes to free-fall acceleration problems. I dispel many misconceptions and explain both why people think they are true and why they actually aren't. Oh, and there are some special effects too! Content Times: 0:14 Review of the Basics of Free-Fall 1:04 1st Misconception - The acceleration on the way up is positive 2:09 2nd Misconception - The initial velocity going upward is zero 2:45 3rd Misconception - A thrown ball will accelerate faster than a dropped ball 4:00 Reminder - Velocity at the top is zero 4:29 4th Misconception - The acceleration at the top is zero 6:36 Review View Video
  12. Name: Don't Drop Your Camera 5.0 Seconds After Liftoff Category: Kinematics Date Added: 22 May 2014 - 04:31 PM Submitter: Flipping Physics Short Description: None Provided An advanced free-fall acceleration problem involving 2 parts and 2 objects. Problem: You are wearing your rocket pack (total mass = 75 kg) that accelerates you upward at a constant 10.5 m/s^2. While preparing to take pictures of the beautiful view, you drop your camera 5.0 seconds after liftoff. 5.0 seconds after you drop the camera, (a) what is the camera's velocity and ( how far are you from the camera? Content Times: 0:17 Reading the problem 1:26 Understanding the problem using a picture 2:10 Listing every known variable 3:22 Which part do we start solving first? 3:47 What do we solve for in part 1? 4:46 That's a lot of subscripts, why? 5:24 Starting to solve the problem. Finding the final velocity for part 1. 6:32 Solving for the final velocity for part 2 for the camera 7:46 Why is the final velocity for part 2 for the camera positive? 9:10 Finding the displacement for part 2 for the camera 9:55 Finding the displacement for part 2 for you 10:42 Finding the distance between you and the camera at the very end 11:27 The Review Want Lecture Notes? Next Video: Introduction to Tip-to-Tail Vector Addition, Vectors and Scalars Previous Video: Dropping Dictionaries Doesn't Defy Gravity, Duh! View Video
  13. Name: A Free-Fall Problem That You Must Split Into Two Parts Category: Kinematics Date Added: 22 May 2014 - 04:27 PM Submitter: Flipping Physics Short Description: None Provided This is a complicated free-fall problem where you have to identify that the velocity at the top of the path is zero in the y-direciton. Furthermore, you have to look at it from the perspective of the whole event and splitting the problem into two different parts. A classic free-fall acceleration example problem. Content Times: 0:45 Reading the problem 1:12 Translating the problem to physics 3:04 Starting with the whole event 4:36 Splitting the problem into two parts 6:06 Solving part 1: Going up 8:17 Finishing the problem 9:05 An alternate solution 9:38 The review View Video
  14. Name: Throwing a Ball up to 2.0 Meters & Proving the Velocity at the Top is Zero Category: Kinematics Date Added: 22 May 2014 - 04:23 PM Submitter: Flipping Physics Short Description: None Provided In the previous lesson we dropped a ball from 2.0 meters above the ground and now we throw one up to a height of 2.0 meters. We do this in order to understand the similarities between the two events. Oh, and of course we draw some graphs. This is an Introductory Free-Fall Acceleration Problem Content Times: 0:18 Reviewing the previous lesson 0:34 Reading the new problem 1:26 Acceleration vs. time 1:59 Velocity vs. time 2:49 Position vs. time 4:16 The Velocity at the top is ZERO! 5:50 Comparing throwing the ball to dropping the ball 6:56 Finding the total change in time 7:44 Finding the velocity initial 9:47 The Review View Video
  15. Name: Dropping a Ball from 2.0 Meters - An Introductory Free-Fall Acceleration Problem Category: Kinematics Date Added: 22 May 2014 - 04:20 PM Submitter: Flipping Physics Short Description: None Provided In this introductory free-fall acceleration problem we analyze a video of a medicine ball being dropped to determine the final velocity and the time in free-fall. Included are three common mistakes students make. "Why include mistakes?" you might ask. Well, it is important to understand what happens when you make mistakes so that you can recognize them in the future. There is also brief description of "parallax" and how it affects what you see in the video compared to reality. Content TImes: 0:26 Reading and viewing the problem 0:50 Describing the parallax issue 1:52 Translating the problem to physics 2:05 1st common mistake: Velocity final is not zero 3:09 Finding the 3rd UAM variable, initial velocity 3:56 Don't we need to know the mass of the medicine ball? 4:35 Solving for the final velocity in the y direction: part (a) 5:39 Identifying our 2nd common mistake: Square root of a negative number? 7:56 Solving for the change in time: part ( 8:28 Identifying our 3rd common mistake: Negative time? 9:36 Please don't write negative down! 10:27 Does reality match the physics? 11:07 The Review Want Lecture Notes? Next Video: Graphing the Drop of a Ball from 2.0 Meters - An Introductory Free-Fall Acceleration Problem Previous Video: Analyzing the Apollo 15 Feather and Hammer Drop -- A Basic Introductory Free-Fall Problem View Video
  16. Name: Toy Car UAM Problem with Two Difference Accelerations Category: Kinematics Date Added: 21 May 2014 - 03:45 PM Submitter: Flipping Physics Short Description: None Provided In this lesson we continue to use what we have learned about solving Uniformly Accelerated Motion (UAM) problems. This problem is more complicated because it involves two, interconnected parts. Content Times: 0:26 Reading the problem 0:46 Seeing the problem 1:11 Translating from words to physics 1:58 Splitting the problem into two parts 3:13 Fixing the knowns (common mistakes) 4:35 How do we know we can use the UAM equations? 5:19 Drawing a picture to better understand the problem 6:00 Finding the missing known 7:29 What are we finding again? 8:45 The end of part 1 is the start of part 2! 9:29 Beginning to solve the problem 11:19 Solving part ( 13:53 What is wrong with solving the whole thing at once? 16:03 Rapping it up! Want Lecture Notes? Next Video: The Humility Soapbox -- Uniformly vs. Uniformally Previous Video: Introductory Uniformly Accelerated Motion Problem -- A Braking Bicycle View Video
  17. Name: Introductory Uniformly Accelerated Motion Problem - A Braking Bicycle Category: Kinematics Date Added: 21 May 2014 - 03:43 PM Submitter: Flipping Physics Short Description: None Provided This video continues what we learned about UAM in our previous lesson. We work through a introductory problem involving a bicycle on which we have applied the brakes. Content Times: 0:28 Reading the problem 0:48 Seeing the problem 1:15 Translating the problem to physics 2:35 Why is it final speed and not velocity? 3:48 Solving for the acceleration 6:03 Converting initial velocity to meters per second 7:32 Solving for distance traveled. 8:05 A common mistake 10:02 Two more ways to solve for the distance traveled. 10:45 Why didn't the speedometer show the correct final speed? View Video
  18. Name: A Basic Acceleration Example Problem and Understanding Acceleration Direction Category: Kinematics Date Added: 21 May 2014 - 08:53 AM Submitter: Flipping Physics Short Description: None Provided This video starts with a simple acceleration problem and then addresses a commonly held misconception that a negative acceleration always means you are slowing down. I do this by way of examples. Kate (my wife) drove the Prius with a camera suction cupped to the window and videoed me riding my bike several times. In the end I ended up with four different examples on the screen at once and 25 different video layers to describe it all. I am really proud about how well it worked. Enjoy. Content Times: 0:26 Reading the problem 0:40 Seeing the problem 1:14 Translating the words to Physics 1:54 Solving the problem 3:50 Why is the number on the bike positive? 4:48 How can the bike be speeding up if the acceleration is negative? 5:50 Comparing velocity and acceleration directions 7:28 All four bike examples on the screen at the same time 7:53 Why isn't there a direction on our answer? 8:51 Outtakes or how the bike riding was filmed View Video
  19. Name: Introduction to Acceleration with Prius Brake Slamming Example Problem Category: Kinematics Date Added: 21 May 2014 - 08:52 AM Submitter: Flipping Physics Short Description: None Provided This is an introduction to the concept of acceleration. There is also an example problem showing applying the brakes while driving a car in order to avoid hitting a basketball. Also included are common mistakes students make while solving a simple problem like this. It is important to see what those mistakes are because it helps students avoid them in the future. Content Times: 0:19 The Equation for Acceleration 1:06 The Dimensions for Acceleration 2:18 Acceleration has both Magnitude and Direction 3:00 Reading the Problem 3:15 Video of the Problem 4:29 Translating the Problem to Physics 5:03 Starting to solve the Problem (with mistakes) 5:37 Explaining two mistakes 7:34 Explaining another mistake 10:00 Outtakes (including a basketball dribbling montage) View Video
  20. Name: Finding Average Speed for Pole Position: Example Problem - Not as easy as you may think Category: Kinematics Date Added: 21 May 2014 - 08:50 AM Submitter: Flipping Physics Short Description: None Provided This video is an example problem that walks through finding the average speed for the last 2 laps of the 4 lap qualifier for the Indianapolis 500 assuming an average speed for the first 2 laps. It is actually more difficult than it initially appears. Content Times: 0:36 Reading the Problem 1:06 Translating to Physics 3:25 A Visual representation of our Known Values 4:07 Beginning to Solve the Problem 5:27 Finding the Time for Part 1 7:15 Finding the Total Time 9:00 Finding the Time for Part 2 10:15 Finding the Average Speed for Part 2 10:45 A Common Mistake 12:07 The Answer 13:15 A Question about Significant Digits View Video
  21. Name: Velocity and Speed are Different: Example Problem Category: Kinematics Date Added: 21 May 2014 - 08:47 AM Submitter: Flipping Physics Short Description: None Provided This example problem works shows that Velocity and Speed are different. It also illustrates that Speed is Not Velocity without direction. Content Times: 0:16 Reading the Problem 1:10 Translating the problem to physics 1:53 Part (a) Average Speed 2:57 Part ( Average Velocity 4:34 Speed is Not Velocity without direction Want Lecture Notes? Next Video: Understanding and Walking Position as a function of Time Graphs Previous Video: Average Velocity Example Problem with Three Velocities View Video
  22. Name: Average Velocity Example Problem with Three Velocities Category: Kinematics Date Added: 21 May 2014 - 08:45 AM Submitter: Flipping Physics Short Description: None Provided This example problem works through finding the average velocity when we have multiple parts to the givens. It involves splitting the given information into separate parts, finding the total displacement, the total time and then the total average velocity. Content Times: 0:23 Reading the Problem 0:56 Translating the problem to physics 1:47 Splitting the givens into three parts 3:58 A plea to slow down when solving problems 5:13 Putting the givens in to a table 5:53 Beginning to solve the problem 6:59 Solving for the individual displacements 8:39 Finding the total displacement 9:33 Finding the total average velocity 10:58 A incorrect way to solve for average velocity 12:20 Outtakes View Video
  23. Name: Introduction to Velocity and Speed and the differences between the two. Category: Kinematics Date Added: 21 May 2014 - 08:44 AM Submitter: Flipping Physics Short Description: None Provided This video introduces the definition of Velocity. It also walks through a simple, introductory average velocity example problem. At the end it defines speed and discusses the difference between speed and velocity. Content Times: (click to skip to that time) 0:18 Velocity Definition 2:12 Velocity has both Magnitude and Direction 3:06 Example Problem 8:41 Speed Definition 9:15 Differences between Speed and Velocity 11:00 Outtakes View Video
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