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motion and forces

TermDefinition
force a push or a pull
an object at rest stays at rest unless an __________ acts on it unbalanced force
inertia the resistance of an object to an change in motion
newtons first law things at rest stay at rest, things in motion stay in motion unless acted upon by unbalanced forces
newtons second law f=ma
newtons third law every action there is an equal&opposite reaction
mass amount of matter in an object
balanced forces equal forces acting on an object in opposite directions
net force overall force on an object after all forces are added
centripetal force type of force that causes a satellite to orbit earth
gravity force that pulls things towards earth
weight force of gravity
gravitational force depends on mass and distance
acceleration depends on force and mass
velocity depends on speed and direction
acceleration change in speed or direction
speed distance an object travels per unit of time
motion when an objects distance from another is changing
projectile object that is thrown
friction force that one surface exerts on another when they rub against each other
air resistance type of friction that is an upward force on an object falling through air
terminal velocity greatest velocity a falling object reaches
satellite object that travels around another in space
Created by: abbyevans