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TermDefinition
Speed The distance traveled over a certain period of time.
What does a straight line represent in a distance vs. time graph? Straight lines represent objects moving at a constant speed. The steeper the slope, the greater the speed of the object.
What does a horizontal line represent in a distance vs. time graph? Horizontal lines with no slope indicate objects at rest.
What does a curved line represent in a distance vs. time graph? Curved lines represent accelerating (or decelerating) objects that are changing velocity (the speed with direction) per unit time.
Constant Speed Does not change.
Non-Constant Speed It changes. Object speed up or slow down.
Acceleration It causes an object to change velocity and/or direction.
Velocity It is speed with a direction. Example, 10 mph, North
What does a positive slope (up) represent in a d/t graph? It represents an object moving away from the origin. 
What does a negative (down) slope represent in a d/t graph? It represents an object moving towards the origin.
Speed formula Distance / time.
In a distance vs. time graph what is the independent variable? Time. X-axis.
In a distance vs. time graph what is the dependent variable? Distance. Y-axis.
Inertia Measures an object's tendency to remain at rest or stay in constant motion. Objects with a greater mass have more inertia.
What is the mathematical relationship between force, mass and acceleration? The bigger the force the bigger the acceleration. The bigger the mass the more force you need.
Created by: user-1776559
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