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George Review 7

QuestionAnswer
speed distance traveled divided by the time
velocity quantity that describes both speed and direction
acceleration any change in velocity
force the cause of an acceleration
balanced forces the total force is equal to zero
unbalanced forces the total force is not equal to zero
friction the force that opposes motion
air resistance the force that opposes motion that is due to air particles colliding with the object
gravity the force of attractin between any two particles of matter
Newton's first law an object at rest stays at rest, an object in motion stays in motion unless acted on by an external net force
Newton's second law F=ma
Newton's third law For every action force there is an equal but opposite reaction force
Created by: jgeorge
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