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| the total force felt by an object |
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| the effects must cancel each other out and not cause a change in an object's motion |
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| the forces acting on an object are unbalanced |
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| Newton's first law of motion |
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| states than an object at rest or moving at a constant speed in a straight line will continue to do so until a net force acts on it |
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| the rubbing force that acts against motion between two touching surfaces |
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Newton's second law of motion
8.7 |
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| says that an object acted upon by a net force will accelerate in the direction of the force according to the equation a=(Fnet)/m |
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| the force that keeps the ground from breaking and letting an object fall through |
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Newton's third law of motion
8.7 |
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| for every action, there is an equal but opposite reaction |
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| enables you to walk without slipping and falling |
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| allows you to know how a force will affect an object |
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| the speed an object reaches when the force of gravity is balanced by the force of air resistance |
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| momentum before = momentum after |
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| action-reaction situation |
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