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, “In my 75 years of living, that has got to be the strangest request I have ever received.” Thank you also to Chris Palmer and Larry Braak for being my on-site 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 Newton’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 …
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 Doesn’t Defy Gravity, Duh!
1¢/minute[more]

A demonstration of how beads react when thrown over the edge of a balcony in a long string. ------------------- If you like this series, please subscribe. Ha...

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 demonstratio...n
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![more]

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![more]

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 nerd-a-pult launching a ball while on momentum carts.
Want lecture notes?
This is an AP Physics 1 Topic.
Conte...nt 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 nerd-a-pult
4:39 Determining relative error
5:09 What happens with a less massive projectile?
Next Video: Introduction to Elastic and Inelastic Collisions
Multilingual? Please help translate Flipping Physics videos!
Previous Video: Introduction to Conservation of Momentum with Demonstrations
Please support me on Patreon![more]

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: Calculatin...g the Force of Impact 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![more]

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 Inelas...tic 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![more]

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 Bo...th 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[more]

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
Mul...tilingual? 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.[more]

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 demonstrati...on
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[more]

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments
will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.

Personal criticism on project forums and in video content is not allowed and will be deleted immediately.
Any violations of this rule could result in expulsion from the project so please, no insults or other negative
personal remarks.

Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your
harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another
person's hard work, then be nice about it.

People work hard on educational categories, and we want to encourage them to make more!