# Gravity

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• GravityIsaac Newton discoveryBy:Mia Santiago
• I will be doing the Science Methods which are Step 1:State a question or problemStep 2:Form a hypothesisStep 3:Conduct an experiment to test the hypothesis Step 4:Make careful observations and collect dataStep 5:Analyze the data to see if the hypothesis is correct
• Hmmmmwhy didn't the apple fly off in space but just fall straight down
• Days later:The only difference is that the moon is far away,but of course the force is weaker there.The force is strong enough to bend the moons motion into a nearly circular path
• I wonder if the same force that pulled the apple to the ground is the same force that is tugging on the moon.
• Days later: I  know what it is.The force is called gravity.The law of gravity is a pretty simple formula,it is all physical objects,which had a force of attraction between them
• The science method has helped me a lot in the discovery of gravity
• Also,gravity depends on the on the masses of the objects and distance between them.For example the moon and earth tug on each other.
• Years later:I have published a book about gravity,called Principia.In my book it represents the laws of gravity and the three laws of motion.It provides a physical explanation of what earlier scientists have discovered.
• I have shown in my book that planet revolve around the sun.Just as the moon travels around the Earth,planets revolve around the sun.
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