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science
Question | Answer |
---|---|
force | a push or pull on an object |
contact force | a push or pull applied by one object to another object that is touching it |
non contact force | a force that pushes or pulls the object without touching it |
friction | a contact that resists the sliding motion between two objects that are touching |
gravity | is a non contact attractive force that exists between all objects that have mass |
balanced forces | when the net force on an object is O N the forces acting on it |
unbalanced forces | when the net force acting on an object is not O the forces acting on it |