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# science(chapter3)

definition term
the force that ttwo surfaces exert on each other when they rub against each other friction
sliding friction (example) friction that occurs when one one solid surface slides over another (sliding a plate across the table)
fluid friction friction that occurs when an object moves through a fluid *bugs swimming through air*
rolling friction friction that occurs when an object rolls over a surface. *a ball rolling sown the hill*
static friction friction that acts between objects that aren't moving *trying to move a couch,but dont have enough force*
the attractive force between object; the force that moves objects down hill gravity
mass a measure of how much matter is in an object.
the tendency of an object to resist change in motion Inertia
the state at which one object distance from another is changing motion
a place of object used for comparison to determine if an object is in motion. reference point
the distance an object travels per unit (calculation: S=distance/time) speed
the overall rate of speed which an object moves calculated by dividing the total distance an object travels by total time average speed
the speed of an object at one instant of time instantaneous speed
the steepness of a graph line; the ratio of the vertical change (the rise) to the horizontal change(run) slope
the rate at which velocity changes acceleration
the combination of all the forces on an object net force
Created by: 100006327494079