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Name: Defining Pi for Physics Category: Rotational Motion Date Added: 20170604 Submitter: Flipping Physics Pi is defined as the ratio of the circumference of a circle to its diameter. A frisbee is used to show the definition of pi. The units for pi, radians, are discussed. The conversion factor between revolutions, degrees, and radians is introduced. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:22 The definition of pi 0:49 Demonstrating the definition of pi 1:35 The units for pi (radians) 2:04 revolutions, degrees, and radians 2:28 Please use rad for radians (not r, that is for radius) Multilingual? Please help translate Flipping Physics videos! Next Video: Introductory Arc Length Problem  Gum on a Bike Tire Previous Video: Introduction to Circular Motion and Arc Length Please support me on Patreon! Thank you to Aarti Sangwan, Scott Carter, and Christopher Becke for being my Quality Control team for this video. Defining Pi for Physics

Pi is defined as the ratio of the circumference of a circle to its diameter. A frisbee is used to show the definition of pi. The units for pi, radians, are discussed. The conversion factor between revolutions, degrees, and radians is introduced. Want Lecture Notes? This is an AP Physics 1 topic. Content Times: 0:22 The definition of pi 0:49 Demonstrating the definition of pi 1:35 The units for pi (radians) 2:04 revolutions, degrees, and radians 2:28 Please use rad for radians (not r, that is for radius) Multilingual? Please help translate Flipping Physics videos! Next Video: Introductory Arc Length Problem  Gum on a Bike Tire Previous Video: Introduction to Circular Motion and Arc Length Please support me on Patreon! Thank you to Aarti Sangwan, Scott Carter, and Christopher Becke for being my Quality Control team for this video.

Name: Impulse Comparison of Three Different Demonstrations Category: Momentum and Collisions Date Added: 20170209 Submitter: Flipping Physics A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of Impact. (Assume the racquetball stops during the collision with the water and soil.) This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:11 Prom Dress Day! 0:20 The three demonstrations 0:32 The problem 1:43 The equation for Impulse and Impact Force 2:02 Understanding the two parts to the demonstrations 3:33 Part (a): Impulse [water and soil] 4:47 Part (a): Impulse [wood] 5:23 Part (b): Impact Force [water and soil] 6:27 Part (b): Impact Force [wood] 7:59 The Ann Arbor Prom Dress Project Thank you to Jan Wery and Judi Lintott of the Ann Arbor Prom Dress Project: “Find your dream dress for less than $25." Next Video: Review of Mechanical Energy and Momentum Equations and When To Use Them! Multilingual? Please help translate Flipping Physics videos! Previous Video: Using Impulse to Calculate Initial Height Please support me on Patreon! Thank you to my Quality Control help: Scott Carter and Jennifer Larsen Impulse Comparison of Three Different Demonstrations

A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of Impact. (Assume the racquetball stops during the collision with the water and soil.) This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:11 Prom Dress Day! 0:20 The three demonstrations 0:32 The problem 1:43 The equation for Impulse and Impact Force 2:02 Understanding the two parts to the demonstrations 3:33 Part (a): Impulse [water and soil] 4:47 Part (a): Impulse [wood] 5:23 Part (b): Impact Force [water and soil] 6:27 Part (b): Impact Force [wood] 7:59 The Ann Arbor Prom Dress Project Thank you to Jan Wery and Judi Lintott of the Ann Arbor Prom Dress Project: “Find your dream dress for less than $25." Next Video: Review of Mechanical Energy and Momentum Equations and When To Use Them! Multilingual? Please help translate Flipping Physics videos! Previous Video: Using Impulse to Calculate Initial Height Please support me on Patreon! Thank you to my Quality Control help: Scott Carter and Jennifer Larsen

Name: Using Impulse to Calculate Initial Height Category: Momentum and Collisions Date Added: 20170203 Submitter: Flipping Physics A 66 g beanbag is dropped and stops upon impact with the ground. If the impulse measured during the collision is 0.33 N·s, from what height above the ground was the beanbag dropped? This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:12 Superhero Day! 0:56 The problem 1:39 Splitting the problem in to two parts 2:32 Using Impulse for part 2 3:30 Using Conservation of Energy for part 1 4:45 What went wrong? Next Video: Impulse Comparison of Three Different Demonstrations Multilingual? Please help translate Flipping Physics videos! Previous Video: Review of Momentum, Impact Force, and Impulse Thanks to Adam Herz for letting me borrow a VHS copy of our high school video yearbook which he was instrumental in the creating of. Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke and Jennifer Larsen Using Impulse to Calculate Initial Height

Using Impulse to Calculate Initial Height
Flipping Physics posted a video in Momentum and Collisions
A 66 g beanbag is dropped and stops upon impact with the ground. If the impulse measured during the collision is 0.33 N·s, from what height above the ground was the beanbag dropped? This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:12 Superhero Day! 0:56 The problem 1:39 Splitting the problem in to two parts 2:32 Using Impulse for part 2 3:30 Using Conservation of Energy for part 1 4:45 What went wrong? Next Video: Impulse Comparison of Three Different Demonstrations Multilingual? Please help translate Flipping Physics videos! Previous Video: Review of Momentum, Impact Force, and Impulse Thanks to Adam Herz for letting me borrow a VHS copy of our high school video yearbook which he was instrumental in the creating of. Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke and Jennifer Larsen 
Name: Demonstrating How Helmets Affect Impulse and Impact Force Category: Momentum and Collisions Date Added: 20161208 Submitter: Flipping Physics Demonstrating and measuring how a helmet changes impulse, impact force and change in time during a collision. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:21 The demonstration without a helmet 1:15 The equation for Impulse 1:55 How a helmet should affect the variables 2:36 The demonstration with a helmet 3:29 Comparing with and without a helmet Next Video: Review of Momentum, Impact Force, and Impulse Multilingual? Please help translate Flipping Physics videos! Previous Video: Demonstrating Impulse is Area Under the Curve Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen Demonstrating How Helmets Affect Impulse and Impact Force

Demonstrating and measuring how a helmet changes impulse, impact force and change in time during a collision. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:21 The demonstration without a helmet 1:15 The equation for Impulse 1:55 How a helmet should affect the variables 2:36 The demonstration with a helmet 3:29 Comparing with and without a helmet Next Video: Review of Momentum, Impact Force, and Impulse Multilingual? Please help translate Flipping Physics videos! Previous Video: Demonstrating Impulse is Area Under the Curve Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen

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Name: Demonstrating Impulse is Area Under the Curve Category: Momentum and Collisions Date Added: 20161201 Submitter: Flipping Physics Demonstrating, measuring and showing Impulse is Area Under the Force vs. Time Curve. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:09 Deriving the Impulse Equation using algebra 0:47 Deriving the Impulse Equation using calculus 2:08 The demonstration 2:42 Illustrating “area under the curve” Next Video: Demonstrating How Helmets Affect Impulse and Impact Force Multilingual? Please help translate Flipping Physics videos! Previous Video: Introductory Elastic Collision Problem Demonstration Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen Demonstrating Impulse is Area Under the Curve

Demonstrating, measuring and showing Impulse is Area Under the Force vs. Time Curve. Want lecture notes? This is an AP Physics 1 Topic. Content Times: 0:09 Deriving the Impulse Equation using algebra 0:47 Deriving the Impulse Equation using calculus 2:08 The demonstration 2:42 Illustrating “area under the curve” Next Video: Demonstrating How Helmets Affect Impulse and Impact Force Multilingual? Please help translate Flipping Physics videos! Previous Video: Introductory Elastic Collision Problem Demonstration Please support me on Patreon! Thank you to my Quality Control help: Christopher Becke, Scott Carter, and Jennifer Larsen

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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

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

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

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

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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

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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!

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

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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!

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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

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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!

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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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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!

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

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!

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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
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