Pedagogy in Action > Library > Using Direct Measurement Videos to Teach Physics > Video Library > Impulse and Momentum

# Impulse and Momentum

Videos shown here contain grids, rulers, frame counters and other overlays that allow students to make measurements directly from the videos. Students can use this data to answer questions and solve problems. For each video, sample questions are shown, and in some cases, sample lesson plan ideas.
To analyze a video frame-by-frame, you will want to download the video file to your computer and open it using QuickTime. Clicking on the links shown here will allow you to view the video in your browser, but you may not be able to view the video frame-by-frame.

#### Hockey Slap Shot

This clip shows a slow motion video of a hockey slap shot. The carbon fiber stick bends as the force of the puck on the stick increases.

Download the QuickTime file: Direct Measurement Video of a Hockey Slap Shot (Quicktime Video 2.4MB Jul15 13) here.

Sample question: What is the average force by the stick on the puck during the time they are in contact?

#### Collision Cart Push-off

This clip shows two people on low-friction carts. They begin at rest, push off, and move in opposite directions.

Download the Quicktime file: Direct Measurement Video of People on Collision Carts (Quicktime Video 2.8MB Feb20 13) here.

Sample question: Use conservation of momentum to determine Christine's mass.

#### Blowdart Cart Collision

This clip shows a blow-dart fired into a low-friction cart.

Download the Quicktime file: Direct Measurement Video of blowdart colliding with cart (Quicktime Video 2MB Feb20 13) here.

Sample question: Calculate the momentum of the dart before the collision and the cart and cart moving together after the collision. Is momentum conserved during this collision?

#### Marble Collides with Aluminum Can

This clip shows a peanut M&M candy fired from a pneumatic cannon. The M&M collides with and passed through an aluminum can.

Download the Quicktime file: Direct Measurement Video of M&M colliding with pop can (Quicktime Video 1.2MB Feb20 13) here.

Sample question: What velocity did the M&M have?

#### Water Jetpack

This clip shows a person on a water-powered jetpack, a platform levitated by a stream of water ejected from downward-pointing nozzles .

Download the QuickTime file: Water jetpack video (Quicktime Video 32.4MB Nov12 12)

Sample question: Determine the flow rate (in kg/s) of the water ejected from the main nozzles that would provide enough thrust to lift the platform and rider.

This clip shows the water jetpack flying around.

#### Blow-dart collides with low friction cart

Screen shot from a Video of blowdart colliding with a cart (Quicktime Video 1.3MB Jul7 12)
This clip shows a blow dart colliding with a foam block attached to a low-friction cart.

Sample question: Compare the momentum of the dart before the collision to the momentum of the dart and cart after the collision. Is momentum conserved?

Sample activity: Direct Measurement Video Analysis - Blow-Dart Collides With Cart

#### M&M candy fired from pneumatic cannon collides with low friction cart

Screen shot from a Video of M&M candy colliding with a cart (Quicktime Video 142kB Jul7 12)
This clip shows a M&M candy fired from a pneumatic cannon colliding with a foam block attached to a low-friction cart.

Sample question: Use conservation of momentum to determine the velocity of the M&M before it hits the cart.