Story Board That Project

Story Board That Project
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Storyboard Text

  • How does the moon orbit around the Earth?  Why doesn't it just go flying in a straight line?  I, Isaac Newton, pledge to figure this out.
  • That apple!  What if the same force that made the apple fall to the ground is pulling on the moon to make it orbit around the Earth.  I will call this gravity.
  • 
  • I can explain this, you see.  The apple had a small mass and was very close to Earth, so gravity dragged it to the ground.  The moon is large, so the pull is not as strong.
  • All physical objects have a force of attraction between them.  The strength of the force depends on the mass and the distance of the objects. The moon and the Earth pull on each other, canceling each other out and trapping the moon in orbit.
  • I should tell people about this.
  • I get it now!
  • F is the force due to gravity, between two masses (m1 and m2), which are a distance r apart and G is the gravitational constant.
  • Gravity is what keeps us grounded.  Everyone should be informed about it. The formula for gravity is F = Gm1m2/r2 
  • The universe is kind of like a well built clock.
  • Everyone, this is my book, "Principia."  It presents the concept of gravity, and my three laws of motion. It provides a physical example of what earlier scientists explored.  It shows why the moon orbits around the Earth, like how the planets travel around the sun.
  • Hey! This guys make a lot of sense.  I now see the world in a whole new light.
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