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# Unit 6: Linear momentum and collisions

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## About this unit

Momentum ties velocity and mass into one quantity. It might not be obvious why this is useful, but momentum has this cool property where the total amount of it never changes. This is called the conservation of momentum, and we can use it to analyze collisions and other interactions. Bam!

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- Calculating linear momentum and change in momentumGet 3 of 4 questions to level up!
- Momentum and velocity from force vs. time graphsGet 3 of 4 questions to level up!
- Change in momentum and speed from force vs. time graphsGet 3 of 4 questions to level up!

### Practice

- Properties of inelastic and elastic collisionsGet 3 of 4 questions to level up!

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### Practice

- Predicting motion using the center of mass Get 3 of 4 questions to level up!

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