Gravitational Forces Between Objects Flashcard

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Mass

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The amount of matter that makes up an object. Mass does not change based on where you are.

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Gravity

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An attractive force between two objects that depends on their masses and the distance between them.

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Galileo

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An Italian astronomer, physicist, and engineer. He is sometimes known as the 'Father of Observational Astronomy.'

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Atmosphere

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The gases that surround Earth or another planet.

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Resistance

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A force that opposes the motion of an object, which can affect how quickly it falls.

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Weight

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The force exerted by gravity on an object, calculated as mass times the acceleration due to gravity.

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Free Fall

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The motion of an object falling under the influence of gravity only, without any air resistance.

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Inertia

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The tendency of an object to resist changes in its state of motion.

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Newton's First Law

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An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

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Universal Gravitation

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The theory that every particle attracts every other particle with a force proportional to their masses and inversely proportional to the square of the distance between them.