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| A force that arises from the physical contact of 2 objects. |
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| The cause of an acceleration or a change in velocity. |
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| A diagram of the objects involved in a situation and the forces exerted on the objects. |
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| The tendency of an object to maintain its current state of motion. |
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| Friction caused by air or water. |
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| An object at rest remains at rest, and an object in motion remains in motion, unless effected by a force. |
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| A single force that acts on an object as a result of the interaction between the object and its environment. |
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| The resistive force that opposes the relative motion of 2 contacting surfaces that are moving past one another. |
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Definition
| Caused by electrostatic forces between molecules of 2 surfaces. |
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Definition
| A pair of simultaneous equal but opposite forces resulting from the interaction of 2 objects. |
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Term
| Is it easier to start the movement of an object or keep it moving? |
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| When the net external force on an object is zero... |
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| The ratio of the force of friction the normal force. |
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| The acceleration of an object is directly proportional to the net external force acting on the object and inversely proportional to the object's mass. |
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| A force that can exist between objects, even in the absence of physical contact. |
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Definition
| The total force resulting from a combination of external forces on an object; also called resultant force. |
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Definition
| The state in which there is no change in a body's motion. |
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Definition
| For every action there is an opposite and equal reaction. |
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Definition
| The magnitude of the force of gravity acting on an object. |
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| A force exerted by one object on another in a direction perpendicular to the surface of contact. |
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Definition
| The resistive force that opposes the relative motion of two contacting surfaces that are at rest with respect to one another. |
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| The force of friction is proportional to the... |
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Definition
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Definition
| Physical quantity to measure inertia. |
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| Forces always exist in... |
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Definition
| A resistive force that acts in a direction opposite to the relative motion. |
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Definition
| the state in which there is no change in a body's motion |
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