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| a push or pull exerted on an object. Causes objects to speed up, slow down, or change direction. |
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a physical model which presents the forces acting on a system.
dot represents object. force represented with arrows signifying direction. Lastly choose a direction to be positive and indicate this off the side of the diagram.Usually select positive direction to be in the direction of the greatest amount of force. Makes it easier to solve by reducing number of negative values in calculation. |
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the vector sum of all the forces of an object.
~when the forces are in opposite directions, the resulting vector is the length of the difference between the two vectors. |
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acceleration = Force(net) / mass
~the acceleration of an object is equal to the sum of the forces acting on the object, divided by the mass of the object. |
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| an object that is at rest will remain at rest, and an object that is moving will continue to move in a straight line with constant speed, if and only if the net force acting on that object is zero. |
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the tendency off an object to resist change.
(part of Newton's First Law) |
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when the net force of an object is zero.
Occurs at rest (V=0) or when moving at constant velocity. |
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| the force an object experiences as a result of all the forces acting on it, giving the object an acceleration. |
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a=-g
no contact forces pushing on the object and the object's apparent weight is zero. |
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| the force exerted by a fluid on the object moving through the fluid. Dependent on the motion of the object, the properties of the object, and the properties of the fluid that the object is moving through |
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the constant velocity that is reached when the drag force equals the force of gravity.
no net force- no acceleration |
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| two forces that are in opposite directions and have equal magnitude. |
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| all forces come in pairs. |
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| the force exerted by a string or rope. |
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| the perpendicular contact force exerted by a surface on another object. |
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