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a force of attraction between two objects; the strength of the force is due to the mass and distance between the two objects
speed and direction that an object travels over a specified distance during a measure amount of time; rate of motion
Law of Universal Gravitation
law stating that any two objects in the universe have gravity and will attract each other, and that attraction depends on how much mass each object has and their distance from each other
the tendency of an object to remain either at rest or in motion unless acted on by an outside force
Law of Inertia
law stating that a body in motion tends to travel in a straight line unless an outside force disturbs it
periodic rising and falling of the surface level of an ocean and other waters resulting from the gravitational attraction of the Moon and the Sun on the solid and liquid surfaces of Earth
higher-than-normal high tide during the month that normally occurs during a new and full moon when the Sun, Moon, and Earth are in line and their gravitational forces are combined
lower-than-normal high tide that occurs when the first or third quarter moon, Earth, and the Sun are at right angles to each other and the gravitational force of the Sun partially offsets the gravitational force of the Moon
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