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Vocab Quiz Science

motion The state in which one object's distances from another is changing
reference point a place or object used for composition to determine if an object is in motion
average speed the total distance traveled divided by the total time elapsed
instantaneous speed the speed of an object at one instant in time
speed the distance an object travels per unit in time
velocity speed in a given direction
slope the steepness of a line of a graph, equal to its vertical change divided by its horizontal change
acceleration the rate at which velocity changes
force a push or pull exerted on an object
unbalanced force force that produce nonzero net force, which changes the object's motion
balanced force equal forces acting on an object in opposite direction
newton a unit of measure equal to the force that would give a mass of one kilogram an acceleration of one meter per second per second
net force the overall force acting on an object
friction the resistance that one surface or object encounters when moving over another
static friction friction that acts on objects that are not moving
gravity the force that pulls objects toward each other
sliding friction friction that occurs when one solid surface slides over another
rolling friction friction that occurs when one solid rolls over a surface
fluid friction friction that occurs when an object moves through a fluid
air resistence the fluid friction experienced by objects falling through air
free fall the motion of a falling object when the only force acting on its gravity
terminal velocity the greatest velocity a falling object can achieve
inertia the tendency of an object to resist any change in its motion
momentum the product of an object's mass and volecity
Law of Conservation of Momentum the rule that in the absence of outside forces the total momentum of objects that interact does not change
Created by: bluesister908