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Force and Motion

*7.7ABCD Force & Motion

TermDefinition
displacement length of a straight line between two points
distance total length of the path actually taken from Point A to Point B
speed how fast an object is moving at a specific moment in time; s=d/t
velocity speed in a specific direction
uniform motion motion of an object with a velocity that does not change
slope Steepness of a graph at a given point
force a push or a pull
inertia tendency of an object to remain stationary or to remain in motion
unbalanced force a force on an object that is not canceled by other forces
balanced forces forces of equal magnitude but in opposite directions acting on the same object
magnitude size or importance
average speed total distance divided by total time taken over an entire journey
distance-time graph line graph used to show the speed of a moving object
acceleration rate of change of velocity
constant speed moving at a steady rate over time
motion object's change in position relative to a reference point
origin fixed point from which motion begins
x-axis horizontal line on a graph
y-axis vertical axis on a graph
speed formula Speed = Distance/Time (S = D/T)
independent variable the experimental factor that is manipulated; the variable whose effect is being studied; x-axis
dependent variable the outcome factor; the variable that may change in response to manipulations of the independent variable; y-axis
Newton's 1st Law (Law of Inertia) an object in motion tends to stay in motion & an object at rest stays at rest unless acted upon by an outside force
friction force that opposes motion between two surfaces that are in contact
force diagram a diagram of the objects involved in a situation and the forces exerted on the objects
net force sum of all forces acting on an object
Created by: trauberk
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