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6th gr Forces

6.7A-C

TermDefinition
force push or pull on matter that enables that matter to CHANGE motion and interact
contact force when matter actually touches to interact
non-contact force exist without touch or contact and still influence matter
applied force contact - directly applied to object; push or pull
normal force contact - a support force; example: a book resting on a table
friction contact - a force that opposes motion when the surface of an object comes into contact with another object.
gravity noncontact - force that attracts an object toward the center of the earth, or toward any other mass.
magnetism noncontact - force of ATTRACTION or Repulsion between CHARGES of matter
unbalanced forces a net force that changes the motion of an object
balanced forces a net force of zero that keeps moving objects in motion with a constant speed and direction OR stationary objects at rest
Newtons (N) unit of measurement of a force; is named after Sir Isaac Newton
spring scale tools used to measure force in Newtons
magnitude quantity or amount
net force the sum of all forces acting on an object; if BALANCE =0, if UNBALANCED ≠0
force pairs forces occur in pairs; they apply equal forces in opposite directions to each other
Newton's Third Law (action-reation) for every action force there is an equal and opposite reaction force that occurs at the exact same time
Created by: NEISDSci
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