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rate of change of velocity; can be calculated by dividing the change in the velocity by the time it takes the change to occur |
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force that opposes the motion of objects that move through the air |
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total distance an object travels divided by the total time it takes to travel that distance |
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forces on an object that combine to give a zero net force and do not change the motion of the object |
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distance and direction of an object's change in position from the starting point |
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a push or pull exerted on an object |
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a force that opposes the sliding motion between objects that are in contact |
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speed of an object at a given point in time; is constant for an object moving with constant speed, and changes with time for an object that is slowing down or speeding up |
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sum of the forces that are acting on an object |
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frictional force that opposes the motion of two surfaces sliding past each other |
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distance an object travels per unit of time |
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frictional force that prevents two surfaces from sliding past each other |
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Definition
forces that combine to produce a net force that is not equal to zero and cause the velocity of an object to change. |
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a physical quantity that is specified by both a size and a direction |
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the speed and direction of a moving object |
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acceleration of an object toward the center of a curved or circular path |
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a net force that is directed toward the center of a curved or circular path |
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Definition
states that if the net force on an object is zero, then an object at rest remains at rest, or, if the object is moving, it continues moving with constant velocity |
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Definition
attractive force between two objects that depends on the masses of the objects and the distance between them |
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Definition
resistance of an object to a change in its motion |
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law of conservation of momentum |
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Definition
states that if a group of objects exerts forces only on each other, then the total momentum of the objects doesn't change |
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property of a moving object that equals its mass times its velocity |
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states that the acceleration of an object is in the same direction as the net force on the object, and that the acceleration equals the net force divided by the mass |
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states that when one object exerts a force on a second object, the second object exerts a force of the first object that is equal in strength and in the opposite direction |
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gravitational force exerted on an object |
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