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written by Robert Teese, Priscilla W. Laws, David P. Jackson, Kathleen M. Koenig, and Maxine Willis
This interactive video tutorial allows students to explore collisions and the implications of Newton's Third Law. This vignette features "person-on-the-street" interviews about forces in collisions as a function of the relative speeds and masses of cars. The viewers are shown various video segments of colliding carts, and real cars, with same and different masses and asked about forces. Over 90 percent of the participants believe that faster objects with more mass exert more force. The dynamics cart collisions with force sensor graphs show that the forces are equal in magnitude, even though the Lego passenger on the less massive cart suffers more injury.

This vignette was studied and found to have a significant effect on learning. See Research Outcomes for details.
1 primary supplement is available
Subjects Levels Resource Types
Classical Mechanics
- Linear Momentum
= Collisions in One Dimension
- Motion in One Dimension
= Acceleration
- Newton's Second Law
= Force, Acceleration
= Interacting Objects
- Newton's Third Law
Education Practices
- Technology
= Multimedia
- Lower Undergraduate
- High School
- Instructional Material
= Tutorial
- Audio/Visual
= Movie/Animation
Intended Users Formats Ratings
- Learners
- Educators
- video/mp4
- text/html
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