Physics

# Conservation of Momentum – Physics 101 / AP Physics 1 Review with Dianna Cowern

Lesson 12 (Conservation of Momentum) 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. Compare the momenta of two objects: one with a mass of 260kg moving at 20m/s, and the other with a mass of 1950kg moving at 1m/s.

2. What are two different (common) ways to represent the units of momentum?

3. You and your spherical space cow push off of each other, in space. The cow, which has a mass of 100kg, ends up with a speed of 2.5m/s. Your mass is 50kg. What will your velocity be after the push?

4. What is the total impulse of a rocket that thrusts with a force of 7600kN for 162 seconds?

Special thanks to Cheyenne Polius for her awesome shoutout at the end of the video!
And thank you to the Planetary Society for allowing us to use the footage for their awesome light sail.

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