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# Unit 5: Work and energy

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## About this unit

"Energy" is a word that's used a lot. Here, you'll learn about how it's one of the most useful concepts in physics. Along the way, we'll talk about work, kinetic energy, potential energy, conservation of energy, and mechanical advantage.### Learn

### Practice

- Calculating work from force vs. position graphsGet 3 of 4 questions to level up!
- Calculating work done by a forceGet 3 of 4 questions to level up!

### Practice

- Using the kinetic energy equationGet 3 of 4 questions to level up!

### Practice

- Calculating change in kinetic energy from a forceGet 3 of 4 questions to level up!
- Velocity and mass from force vs. position graphsGet 3 of 4 questions to level up!

### Learn

### Practice

- Calculating spring force Get 3 of 4 questions to level up!
- Calculating elastic potential energyGet 3 of 4 questions to level up!

### Learn

### Practice

- Conservation of energy: Predict changes in energy Get 3 of 4 questions to level up!
- Conservation of energy: Numerical calculationsGet 3 of 4 questions to level up!

### Practice

- Relating power and energyGet 3 of 4 questions to level up!

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Level up on all the skills in this unit and collect up to 1100 Mastery points!#### Unit test

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