Newton’s First Law

  • What About Pluto?

    What About Pluto?

    In my last post, we explored the two types of planets: terrestrial (Mercury, Venus, Earth, and Mars) and Jovian (Jupiter, Saturn, Uranus, and Neptune). Pluto was conspicuously absent from the lineup…especially considering that we took a peek at the moon.…

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  • Newton and Gravity

    Newton and Gravity

    So, the moon stays in orbit around the Earth, right? Yeah, I thought so. But why? The moon’s orbit is not a straight line, which means it’s accelerated motion (using the physics definition, which is absolutely any change in speed or…

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  • Newton’s Laws of Motion

    Newton’s Laws of Motion

    It’s said that Sir Isaac Newton was sitting under an apple tree when an apple fell on his head, and that’s when all his discoveries began. Personally, I doubt that story — just as I doubt that Galileo Galilei ever dropped…

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