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The planets orbit around the sun in an ellipse with the sun as the focus
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Keeplers law
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If an imaginary line from a planet to the sun is drawn, it will sweep out an equal area each time
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Law of equal area
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A force of attraction between all bodies of mass
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Gravity
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Everybody has in the universe has attracts every other body with a force that varies with the product of the masses and inversely with the square of the distance between the center of the 2 masses
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Law of universal gravitation
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Every force force is accompanied by an equal but opposite force
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Newtons 2nd law
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Product of a body's mass and its velocity
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Momentum
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The total momentum of an isolated system cannot change
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Law of conservation of momentum
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The curved path of the motion of an object that is projected into the air
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2-d motion
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The path an object takes
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Trajectory
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The force directed toward center. in circular motion. F>e must be perpendicular to the object's motion is governed by Newton's Laws
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Centripetal force
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Time it takes to transverse the circumference
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Period
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Directly proportional to the rest position
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Harmonic motion
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Side to side movement; goes over the same path
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Vibration
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One complete back and forth motion
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Period
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Object that swings back and forth
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Pendulum
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