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force of the roller coaster so when the roller coaster goes upside down gravity pushes back on the coaster

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In 1687, English scientist Sir Isaac Newton published his law of universal gravitation, which is still used to describe the forces of gravity in most everyday contexts. 

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In 1687, English scientist Sir Isaac Newton published his law of universal gravitation, which is still used to describe the forces of gravity in most everyday contexts. 

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Gravity is responsible for the complexity in the universe, by creating spheres of hydrogen , where hydrogen fuses under pressure to form stars , and grouping them into galaxies.

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gravity is an invisible force that occurs between two objects.

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the earth tides are caused by moos gravitational pull on the oceans

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Definition of Gravity- its the force that attracts a body toward the center of the earth, or toward any other physical body having mass.  

# data[].attributes.subject
Definition of Gravity- its the force that attracts a body toward the center of the earth, or toward any other physical body having mass.  