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CIS Forces

Forces vocab and diagrams

QuestionAnswer
force push or pull
net force sum of all the forces acting on an object
balanced forces forces on an object that are equal in size and opposite in direction
unbalanced forces forces on an object that are either not equal in size or opposite in direction
inertia an objects resistance to any change in motion
Sir Isaac Newton British scientist, known for his laws of motion
Newton's first law of motion objects in motion tend to stay in that motion until an unbalanced force acts on it.
Newton's second law of motion the acceleration of an object is in the same direction as the net force on the object
Newton's second law of motion FORMULA acceleration = force/mass
Friction force that opposes motion
static friction force of friction between objects that are not moving
sliding friction force that opposes the motion of tow surfaces sliding past each other
air resistance friction between the air and things moving through it.
terminal velocity when the pull of gravity is balanced by the upward force of air resistance. you fall but no longer accelerate.
gravity attractive force between any tow objects. it depends on the masses of the objects and the distance between them
9.8 m/s^2 acceleration due to gravity
weight force of gravity on an object
force equation F=ma or force equals mass times acceleration
weight equation W=mg weight equals mass times acceleration due to gravity
projectile motion the motion of an object that has horizontal and vertical motion
centripetal acceleration the acceleration toward the center of a curved path
centripetal force the force that causes centripetal acceleration
Newton's third law of motion for every action force there is an equal and opposite reaction force
Created by: furloughh
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