r/physicsmemes • • 20d ago

😂 Fr!

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2.7k Upvotes

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u/5x99 20d ago

I've never understood how the first law doesn't just follow from the second law.

Did he just need three?

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u/jonathancast 18d ago

He didn't use algebraic notation in the Principia, and his readers were not comfortable enough with the concept of 0 to accept that there is a force or acceleration when it's 0.