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8 Cards in this Set
- Front
- Back
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Keplers first law |
states that the planets move in elliptical paths, with the sun at one focus |
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keplers second law |
states that an imaginary line from the sun to a planet sweeps out equal areas in equal time intervals |
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Keplers third law |
states that the square of the ratio of the periods of any two planets is = to the cube of the ratio of their average distances from the sun |
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gravitational force |
the attractive force between two objects that is directly proportional to the mass of the objects |
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law of universal gravitation |
states that gravitational force between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers |
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gravitational field |
the field that surrounds any object with mass; equals the universal constant x the mass of the object divided by the square of the distance from the objects center |
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inertial mass |
measure of an object's resistance to any type of force |
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gravitational mass |
the size of the gravitational force between two objects |
