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Elastic and Inelastic Collisions - Physics 101 / AP Physics 1 Review with Dianna Cowern

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Channel: Physics Girl
Categories: Physics   |   Science  
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Description

Lesson 13 (Collisions) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need an AP Physics 1 review before the exam? This course is for you!

Exercises in this video:
1. Are the following collisions elastic or inelastic?
- Asteroid hitting Earth?
- Spitball smacking into your friend?
- Pool balls hitting each other?
- Water balloon hitting your face?
- Newtons cradle?
- Bumper cars colliding?
- A car crash?
- Subatomic particles colliding?
- Black holes colliding?

2. A toy train of mass 2kg, traveling at a speed of 12m/s, collides with an identical train at rest. They stick together. What is the new speed of the trains?
How much energy was lost to heat in that inelastic collision?

3. A pool ball traveling at 2m/s directly hits an identical, but stationary, pool ball. What are the velocities of each ball after the collision?

Special thanks to cosmologist Dr. Katie Mack for her awesome shoutout at the end of the video! You can follow her on Twitter @AstroKatie

Credits:
Dianna Cowern - Executive Producer/Host/Writer
Jeff Brock - Lead Writer/Course Designer
Laura Chernikoff - Producer
Rachel Watson - Video Editor
Sophia Chen - Researcher/Writer
Erika K. Carlson - Researcher/Writer
Hope Butner - Production Assistant
Levi Butner - Videographer
Lauren Ivy - Set Design
Vanessa Hill - Consulting Producer
Aleeza McCant - Illustrator
Rachel Allen - Illustrator
Consultant - Kyle Kitzmiller
Lucy Brock, Samantha Ward - Curriculum Consultants
Cathy Cowern - Transcription

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