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Chapter 1, Section 2Forces
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ForceDefinition: A force is a push or pull
Example: Pushing a door open Pulling a wagon
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NewtonsDefinition: units used for force
Example: 5N
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Net ForceDefinition: the force that results from combining all the forces on an object.
Ex. The net force during a tug of war game 5N right – 3 N left= 2 N right
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When 2 forces are in the same direction
Explanation: When two forces are in the same direction, you should ADD them together!
Example: 2 N south + 4 N south = 6N south
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When 2 forces are in the different directions
Explanation: When two forces are in opposite directions, you SUBTRACT them.
Example: 12N North – 5 N South = 7N North
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Balanced ForcesExplanation: Balanced forces occur when the forces applied to an object produce a net force of zero. NO change of movement.
Example: Sitting in a chair (60N down, 60 N up= 0 net force)
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Unbalanced ForcesExplanation: Unbalanced forces occur when the net force on an object is greater than zero and the object changes its position.
Example:pushing a box and it slides 2 m.
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