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Name: Impulse for Two Objects being Attracted to One Another Category: Circular Motion & Gravity Date Added: 20180311 Submitter: Flipping Physics In a universe devoid of anything else, two identical spheres of mass, m, and radius, R, are released from rest when they have a distance between their centers of mass of X. Find the magnitude of the impulse delivered to each sphere until just before they make contact. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:07 Translating the problem 1:26 Applicable impulse equations 2:13 Conservation of mechanical energy 3:28 Showing a common mistake 4:00 Solving the problem Next Video: Force of Gravity and Gravitational Potential Energy Functions from Zero to Infinity (but not beyond) Multilingual? Please help translate Flipping Physics videos! Previous Video: Mechanical Energy of a Satellite in Circular Orbit Please support me on Patreon! Thank you to Aarti Sangwan, Sawdog, Jonathan Everett, Christopher Becke, and Scott Carter for being my Quality Control Team for this video. Thank you to Youssef Nasr for transcribing the English subtitles of this video. Impulse for Two Objects being Attracted to One Another

 universal gravitational potential energy
 kinetic energy
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I am confused about problem number seven part b in this pdf. http://aplusphysics.com/ap1/Problems/AP1 Momentum.pdf I read the given answer, and I am still confused. I don't know how you are supposed to get 0 m/s for the velocity of the block. Why do you use negative impulse for the block when you use positive impulse for the sphere? When do you use negative impulse? Why don't you use the mass of the entire system, which would be the block and the ball? This has to do with it being elastic/inelastic, but I don't know how you can tell from an impulse graph. Help??
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 linear momentum
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I've been extremely curious on how much Physics Education professional dart players have on shooting? It's quite impressive to throw 3 darts in such a small group repeatedly without any fixed sights. If you have any Physics, mathematics, knowledge,suggestion to this either by text, video, illustration would you be so kind to share? Im looking for anything and everything to do with start to finish with throwing and standing also throwing a Steel Tip Dart (with a flight and its uses along with balance and it's shaft) The functions of each piece of the process compared to it's closest similarities. Thank You So Much.

Name: Demonstrating Why Water Stays in a Bucket Revolving in a Vertical Circle Category: Rotational Motion Date Added: 20171015 Submitter: Flipping Physics Yes, water stays in the bucket. Would you like to know why? Watch the video and learn! Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:14 The demonstration 0:52 Why does water flow out of a bucket? 1:40 Inertia! 2:38 Visualizing why Next Video: Analyzing Water in a Bucket Revolving in a Vertical Circle Multilingual? Please help translate Flipping Physics videos! Previous Video: Determining the Force Normal on a Toy Car moving up a Curved Hill Please support me on Patreon! Thank you to Aarti Sangwan and Christopher Becke for being my Quality Control Team for this video. Demonstrating Why Water Stays in a Bucket Revolving in a Vertical Circle

Name: AP Physics C: Rotational vs. Linear Review (Mechanics) Category: Rotational Motion Date Added: 20170428 Submitter: Flipping Physics Calculus based review and comparison of the linear and rotational equations which are in the AP Physics C mechanics curriculum. Topics include: displacement, velocity, acceleration, uniformly accelerated motion, uniformly angularly accelerated motion, mass, momentum of inertia, kinetic energy, Newton’s second law, force, torque, power, and momentum. Want Lecture Notes? Content Times: 0:12 Displacement 038 Velocity 1:08 Acceleration 1:33 Uniformly Accelerated Motion 2:15 Uniformly Angularly Accelerated Motion 2:34 Mass 3:19 Kinetic Energy 3:44 Newton’s Second Law 4:18 Force and Torque 5:12 Power 5:45 Momentum Multilingual? Please help translate Flipping Physics videos! AP Physics C Review Website Next Video: AP Physics C: Universal Gravitation Review (Mechanics) Previous Video: AP Physics C: Rotational Dynamics Review  2 of 2 (Mechanics) Please support me on Patreon! Thank you to Sawdog for being my Quality Control individual for this video. AP Physics C: Rotational vs. Linear Review (Mechanics)

Name: AP Physics C: Momentum, Impulse, Collisions and Center of Mass Review (Mechanics) Category: Momentum and Collisions Date Added: 20170428 Submitter: Flipping Physics Calculus based review of conservation of momentum, the momentum version of Newton’s second law, the ImpulseMomentum Theorem, impulse approximation, impact force, elastic, inelastic and perfectly inelastic collisions, position, velocity and acceleration of the center of mass of a system of particles, center of mass of a rigid object with shape, and volumetric, surface and linear mass densities. For the calculus based AP Physics C mechanics exam. Want Lecture Notes? Content Times: 0:11 Momentum 0:38 Momentum and Newton’s Second Law 1:44 Conservation of Momentum 2:35 ImpulseMomentum Theorem 4:23 Impulse Approximation and Force of Impact 5:32 Elastic, Inelastic, and Perfectly Inelastic Collisions 6:39 Position of the Center of Mass of a System of Particles 7:19 Velocity of the Center of Mass of a System of Particles 7:54 Acceleration of the Center of Mass of a System of Particles 8:31 Center of Mass of a Rigid Object with Shape 10:09 Volumetric, Surface, and Linear Mass Density Multilingual? Please help translate Flipping Physics videos! AP Physics C Review Website Next Video: AP Physics C: Rotational Kinematics Review (Mechanics) Previous Video: AP Physics C: Integrals in Kinematics Review (Mechanics) Please support me on Patreon! Thank you to Aarti Sangwan, Jordan Bueno, and Michael Nelson for being my Quality Control team for this video. AP Physics C: Momentum, Impulse, Collisions and Center of Mass Review (Mechanics)

 linear
 conservation of momentum
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Name: 2D Conservation of Momentum Example using Air Hockey Discs Category: Momentum and Collisions Date Added: 20170521 Submitter: Flipping Physics A 28.8 g yellow air hockey disc elastically strikes a 26.9 g stationary red air hockey disc. If the velocity of the yellow disc before the collision is 33.6 cm/s in the x direction and after the collision it is 10.7 cm/s at an angle 63.4° S of E, what is the velocity of the red disc after the collision? This is an AP Physics 1 topic. Want Lecture Notes? Content Times: 0:12 The problem 1:49 Breaking the initial velocity of disc 1 into its components 3:06 Conservation of momentum in the xdirection 5:24 Conservation of momentum in the ydirection 6:26 Solving for the final velocity of disc 2 using its components 8:40 Was this an elastic collision? 12:39 Movie Character Day! Multilingual? Please help translate Flipping Physics videos! Next Video: Introduction to Circular Motion and Arc Length Previous Video: Review of Mechanical Energy and Momentum Equations and When To Use Them! Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen "Nombre de los vientos". Licensed under Public domain via Wikimedia Commons  2D Conservation of Momentum Example using Air Hockey Discs

 kinetic energy
 elastic

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File Name: WS: Momentum and Motion File Submitter: FizziksGuy File Submitted: 19 Apr 2013 File Category: Momentum & Impulse Problem set combining conservation of momentum, projectile motion, and friction.
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 momentum
 conservation of momentum
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Name: You Can't Run From Momentum! (a momentum introduction) Category: Momentum and Collisions Date Added: 20170112 Submitter: Flipping Physics Two kids walk through the woods discussing momentum. I mean, who wouldn’t? Okay, fine. It’s a basic introduction to the concept of momentum. Want Lecture Notes? This is an AP Physics 1 Topic. Next Video: Force of Impact Equation Derivation http://www.flippingphysics.com/impactforce.html Multilingual? Please help translate Flipping Physics videos! Previous Video: Instantaneous Power Delivered by a Car Engine  Example Problem Please support me on Patreon! Please consider becoming a Flipping Physics Quality Control helper. You Can't Run From Momentum! (a momentum introduction)

Name: Review of Momentum, Impact Force, and Impulse Category: Momentum and Collisions Date Added: 20170126 Submitter: Flipping Physics An important review highlighting differences between the equations for Conservation of Momentum, Impact Force and Impulse. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:17 Conservation of Momentum 1:01 An explosion is a collision in reverse 1:22 Impact Force 1:39 Impulse 2:16 Impulse equals 3 things 2:53 How many objects are in these equations? A big THANK YOU to Elle Konrad who let me borrow several of her old dance costumes! Next Video: Using Impulse to Calculate Initial Height Multilingual? Please help translate Flipping Physics videos! Previous Video: Demonstrating How Helmets Affect Impulse and Impact Force Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke, Scott Carter and Jennifer Larsen Review of Momentum, Impact Force, and Impulse

Name: Introductory Elastic Collision Problem Demonstration Category: Momentum and Collisions Date Added: 20161124 Submitter: Flipping Physics An elastic collision is demonstrated and analyzed. Want lecture notes? This is an AP Physics 1 Topic. A big thank you to Mr. Becke for being a guest in today’s video! Content Times: 0:25 Reading and translating the problem 1:17 The demonstration 1:52 Solving for velocity final of cart 2 3:46 Measuring the velocity final of cart 2 4:25 Checking if kinetic energy is conserved 6:22 We should have converted to meters per second Next Video: Demonstrating Impulse is Area Under the Curve Multilingual? Please help translate Flipping Physics videos! Previous Video: Introductory Perfectly Inelastic Collision Problem Demonstration Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke and Jennifer Larsen Introductory Elastic Collision Problem Demonstration

Name: Introductory Perfectly Inelastic Collision Problem Demonstration Category: Momentum and Collisions Date Added: 20161117 Submitter: Flipping Physics A perfectly inelastic collision is demonstrated and analyzed. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:08 Demonstrating the Perfectly Inelastic Collision 0:41 Known values 1:34 Using Conservation of Momentum 2:22 Both objects have the same final velocity 3:37 Measuring the final velocity 4:05 Determining the relative error 4:45 Fruit Day! Next Video: Introductory Elastic Collision Problem Demonstration Multilingual? Please help translate Flipping Physics videos! Previous Video: Introduction to Elastic and Inelastic Collisions Please support me on Patreon! Thank you to my Quality Controllers: Christopher Becke Scott Carter Introductory Perfectly Inelastic Collision Problem Demonstration

Name: Introduction to Elastic and Inelastic Collisions Category: Momentum and Collisions Date Added: 20161110 Submitter: Flipping Physics Learn about Elastic, Inelastic and Perfectly Inelastic collisions via a demonstration Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:15 The charities 1:05 Elastic collisions 2:09 Inelastic collisions 3:29 Perfectly Inelastic collisions 4:13 Demonstration #1 5:28 Demonstration #2 Next Video: Introductory Perfectly Inelastic Collision Problem Demonstration Multilingual? Please help translate Flipping Physics videos! Previous Video: Introductory Conservation of Momentum Explosion Problem Demonstration The Charities: Children With Hair Loss Alpha House Home Of New Vision American Foundation for Suicide Prevention Please support me on Patreon! Introduction to Elastic and Inelastic Collisions

 inelastic
 demonstration
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Name: Introductory Conservation of Momentum Explosion Problem Demonstration Category: Momentum and Collisions Date Added: 20161013 Submitter: Flipping Physics Now that we have learned about conservation of momentum, let’s apply what we have learned to an “explosion”. Okay, it’s really just the nerdapult launching a ball while on momentum carts. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:38 The demonstration 1:16 The known values 2:07 Solving the problem using conservation of momentum 4:00 Measuring the final velocity of the nerdapult 4:39 Determining relative error 5:09 What happens with a less massive projectile? Multilingual? Please help translate Flipping Physics videos! Previous Video: Introduction to Conservation of Momentum with Demonstrations Please support me on Patreon! Introductory Conservation of Momentum Explosion Problem Demonstration

 conservation
 momentum
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Name: Introduction to Conservation of Momentum with Demonstrations Category: Momentum and Collisions Date Added: 20161013 Submitter: Flipping Physics Demonstrations of and Introduction to Conservation of Momentum Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:10 Deriving Conservation of Momentum 1:33 Demonstrating Conservation of Momentum 1:53 Analyzing the demonstration 3:29 How a rocket works Next Video: Introductory Conservation of Momentum Explosion Problem Demonstration Multilingual? Please help translate Flipping Physics videos! Previous Video: How to Wear A Helmet  A PSA from Flipping Physics Please support me on Patreon! Introduction to Conservation of Momentum with Demonstrations

 conservation
 momentum
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Name: Proving and Explaining Impulse Approximation Category: Momentum and Collisions Date Added: 20160922 Submitter: Flipping Physics Know when and how to use the “Impulse Approximation”. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:12 Reviewing the examples 0:43 Defining Impulse Approximation 1:41 Determining the forces during the collision 2:27 Solving for the Force Normal (or Force of Impact) 3:12 Determining our error Next Video: How to Wear A Helmet  A PSA from Flipping Physics Multilingual? Please help translate Flipping Physics videos! Previous Video: Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall Please support me on Patreon! Proving and Explaining Impulse Approximation

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 demonstration
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Name: Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall Category: Momentum and Collisions Date Added: 20160922 Submitter: Flipping Physics Now mr.p doesn’t bend his knees when stepping off a wall. What is the new force of impact? Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:18 How much does mr.p bend his knees? 1:00 Reviewing the previous problem 1:57 What changes if I don’t bend my knees? 2:41 Impulse introduction 3:36 The impulse during this collision 4:51 Why is it bad to not bend your knees? 5:22 Estimating time of collision if I don’t bend my knees 6:09 Solving for the force of impact 6:51 Review 7:28 No tomatoes were wasted in the making of this video Next Video: Proving and Explaining Impulse Approximation Multilingual? Please help translate Flipping Physics videos! Previous Video: Calculating the Force of Impact when Stepping off a Wall Please support me on Patreon! Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall

Name: Calculating the Force of Impact when Stepping off a Wall Category: Momentum and Collisions Date Added: 20160908 Submitter: Flipping Physics A 73 kg mr.p steps off a 73.2 cm high wall. If mr.p bends his knees such that he stops his downward motion and the time during the collision is 0.28 seconds, what is the force of impact caused by the ground on mr.p? Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:21 Translating the problem 1:32 Splitting the problem into parts 3:07 Substituting in known variables 4:30 Finding the final velocity for part 1 6:21 Substituting back into Force of Impact equation 7:23 Converting to pounds Next Video: Impulse Introduction or If You Don't Bend Your Knees When Stepping off a Wall Multilingual? Please help translate Flipping Physics videos! Previous Video: Instantaneous Power Delivered by a Car Engine  Example Problem Please support me on Patreon! A big thank you to Jean Gifford for donating the money for Bo and Billy’s bathrobes! Calculating the Force of Impact when Stepping off a Wall

Name: Force of Impact Equation Derivation Category: Momentum and Collisions Date Added: 20170112 Submitter: Flipping Physics Rearranging Newton’s Second Law to derive the force of impact equation. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:09 Newton’s Second Law 1:57 The Force of Impact equation 2:33 The paradigm shift Next Video: Calculating the Force of Impact when Stepping off a Wall Multilingual? Please help translate Flipping Physics videos! Previous Video: You Can't Run From Momentum! (a momentum introduction) Please support me on Patreon! Force of Impact Equation Derivation

I'm sure everyone reading this knows what a sniper rifle is. You know: long barrel, cylindrical scope, big long bullets, used for long range and heavily armored targets. But, what you might not know is how powerful one is. The standard NATO sniper rifle bullet is the .5 BMG. Made in 1921, the most powerful version of that cartridge is about .052 kg, and leaves the rifle at 882 m/s. p = mv, so p = (.052)(882) = 45.86 Ns. That big fat hunk of copper has about 50 Ns of life in it. Now, the average adult human head weighs about 4.5  5 kg. Seen as how I'm writing this I'll use myself as the test subject. I'm not quite an adult yet, so let's say 4.5 kg. One day, a friendly physics teacher near you sees just way too many tests in one day, pulls a standard issue sniper rifle out of his attack and takes a pot shot at some weird kid. Naturally my head pops of like a tootsie pop in that owl cartoon. Assuming the bullet finds a warm new home in my cranium, that's 10.08 m/s it pulls my dome along with. The average height of a 17 year old male teenager is about 1.75 m. Assuming that the bullet is fired horizontally, we can use kinematics magic to find that my head hits the ground 6.02 m away from my toothpick body, and rolls whocares m afterwards. Doesn't sound fun does it? That's why I'm proud to present to you our newest innovation in protective headgear: the tank hat. This simple helmet is made of solid 6" steel and can protect you from bullets, mortar, bullies, and apples. Teach Newton a thing or two today! Warning, tank hat does not protect against .5 BMG Armor Piercing rounds. Don't be rude to IHS Physics teachers for your own good

Name: Linear Momentum and Impulse Review for AP Physics 1 Category: Exam Prep Date Added: 18 March 2015  10:30 AM Submitter: Flipping Physics Short Description: None Provided Review of the topics of Linear Momentum and Impulse covered in the AP Physics 1 curriculum. Content Times: 0:16 Linear Momentum 0:51 Conservation of Momentum 1:26 Types of Collisions 2:29 Newtonâ€™s Second Law in terms of Momentum 3:16 Impulse 4:11 Impulse during collisions Multilingual? View Video

Name: How to Wear a Helmet a PSA from Flipping Physics Category: Momentum and Collisions Date Added: 18 September 2014  03:36 PM Submitter: Flipping Physics Short Description: None Provided Wearing a helmet is all about impulse, change in momentum and the force of impact. This video illustrates why you should secure your helmet to your head. Thank you very much to Colton and Jean Johnson who said yes when I asked them if I could film myself riding my bike off their dock. Colton also said, â€œIn my 75 years of living, that has got to be the strangest request I have ever received.â€ Thank you also to Chris Palmer and Larry Braak for being my onsite camera operators. Content Times: 0:19 Are you wearing your helmet? 0:53 Riding my bike off the dock into the lake. 2:15 The helmet falls off 2:40 Newtonâ€™s 2nd Law 4:08 Impulse approximation 5:01 Which variables are NOT dependent on helmet status 6:23 Impulse 7:01 What variables does wearing a helmet change 7:57 This one time I was riding my bike â€¦ 8:50 A contrasting story Want Lecture Notes? Multilingual? Please help translate Flipping Physics videos! More Flipping Physics Videos: The Classic Bullet Projectile Motion Experiment & Dropping Dictionaries Doesnâ€™t Defy Gravity, Duh! 1Â¢/minute View Video

When cars get into a collision, why does it seem like half the car gets turned into debris? The answer is simple, conservation of momentum. In elastic collisions, like car crashes, the projectiles have a lot of momentum. If a head on collision occurred where the cars stayed perfectly rigid, the occupants would have a huge change in momentum. This used to happen before modern safety regulations. Modern cars are designed to "give", absorbing a large amount of momentum and keeping the occupants from experiencing the same change in momentum, saving lives and livelihoods in the process. It is a lot better to lose more of your car than losing more of your body. Enjoy: http://www.youtube.com/watch?v=nyfRwMQTk


 momentum
 conservation of momentum
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