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Unit 03 23-24

Force and Motion

TermDefinition
speed the change in distance over a specific amount of time
formula for speed S=D/T
formula for time T=D/S
formula for distance D=T*S
constant speed When the speed of an object remains the same, it does not increase or decrease, represented by a straight diagonal line on a distance vs. time graph
no speed An object is at rest, represented by a straight horizontal line on a distance vs. time graph
average speed an average of all speeds over a given time
formula for average speed Total Distance / Total Time
velocity speed given in a specific direction
formula for velocity S=D/T (make sure to add direction to your final answer)
acceleration change in speed or velocity over a specific amount of time (speeding up, slowing down, or changing direction)
formula for acceleration A=S/T
x-axis a line of reference, at 0, stretching horizontally on a graph.
y-axis a line of reference, at 0, stretching vertically on a graph.
Speed Graph graph with distance or position on the y-axis and time on the x-axis
1st Law of Motion A body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force
Balanced Force When two forces act upon each other in opposite directions, and they are both the same size.
Unbalanced Force Forces applied to an object in opposite directions that are not equal in size
Net Force The vector sum of all the forces that act upon an object.
Created by: LMS 7 Sci
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