Is there a net force on a ball that has been punted into the air? If so, what is providing the net force?
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Answer:
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Answer:
We know what a force is (a vector), and we know how to apply a force to an object (divide it by mass and add it to the object’s acceleration vector). What are we missing? Well, we have yet to figure out how we get a force in the first place. Where do forces come from?
Throughout this section, we'll look at two methods for creating forces in our ProcessingJS world:
Make up a force! After all, you are the programmer, the creator of your world. There’s no reason why you can’t just make up a force and apply it.
Model a force! Yes, forces exist in the real world. And physics textbooks often contain formulas for these forces. We can take these formulas, translate them into source code, and model real-world forces in ProcessingJS.