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| An object continues in a state of rest or in a state of motion at a constant speed along a straight line, unless compelled to change that state by a net force. |
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| When a net external force acts on an object of mass M, the acceleration A that results is directly proportional to the net force and has a magnitude that is inversely proportional to the mass. The direction of the acceleration is the same as the direction of the net force. F=MA |
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| Whenever one body exerts a force on a second body, the second body exerts an oppositely directed force of equal magnitude on the first body. |
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| measure of the gravitational force that the earth exerts on an object. |
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| the force component that is perpendicular to the surface that an object is in contact with |
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| when an object has zero acceleration. |
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| vector sum of all applied external forces |
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| the natural tendency of an object to remain at rest or in motion at a constant speed along a straight line. |
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| the force component that is parallel to the surface that an object is in contact with |
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