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## Pixar in a Box

### Course: Pixar in a Box>Unit 7

Lesson 2: The physics of particle systems

# Start here!

## How do computers simulate the motion of virtual particles?

In this lesson we'll explore how we use fairly simple physics to draw particles which move according to the forces we feel in the real world (such as wind & gravity).
We'll begin by reviewing the basics of position, velocity and acceleration curves:
We will cover how to draw (and add) forces which act on virtual particles using vectors.
Then we'll explore the relationship between the net force on a particle and the resulting acceleration thanks to Newton's second law of motion.
Finally we'll show you how to calculate the motion of a particle, frame by frame.
After that you'll have all the tools you need to try programming your first particle simulator.

## Want to join the conversation?

• Guys, I'm in 3rd Grade, and I don't understand a thing about linear equations,the videos about particle physics and how to make your own one, and I am so interested. It's like there's no logic existing in this world. Go figure! :(
• I'm in 5th grade it is awesome you get to spend 40% of your time on a device!
• Do you have to know math to do it?
• I really don't wanna do equations,algebra,arithmetic and e.t.c, but guess what, I have to!!
• i dont understand a thing this is saying
• I'm in 6th grade, and I have a strong interest in animating, but seeing that this course is for middle school, is it still okay if I take part in this course?
• You can learn anything, Hi People out
• im in third grade and i can understand
• cool me too i am also in third grade
• What is this?
i don't understand anything!