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# Unit 1: Forces and motion

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## About this unit

Understanding interactions between force, mass, acceleration, and momentum allows us to predict and how an object will move and comes in handy when we're designing things like airplanes or seismically-reinforced buildings. Let's start exploring what these terms mean and how they relate to one another!Newton may not have been a Jedi, but he sure knew a lot about force.

### Learn

### Practice

- Understand: force, mass, and accelerationGet 3 of 4 questions to level up!
- Apply: force, mass, and accelerationGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 160 Mastery points

A baseball and a cheetah can both travel 50 miles per hour, but which would you rather catch?

Momentum can't be created or destroyed. So where does it come from?

### Learn

### Practice

- Understand: conservation of momentumGet 3 of 4 questions to level up!
- Apply: conservation of momentumGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 240 Mastery points

Up next for you:

Level up on all the skills in this unit and collect up to 500 Mastery points!