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Change In Motion & forces
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Gravity
Key Concepts:
Terms in this set (16)
distance
how far an object has traveled from one location to another along a specific path
reference point
a place or object used for comparison to determine if an object is in motion
position
a description of where an object is relative to some reference point
displacement
how far an object is from its original locations, regardless of its path; it is the shortest distance between two points
speed
describes how fast an object is moving
velocity
describes how fast and in what direction an object is moving
average speed
the total distance traveled divided by the total time
instantaneous velocity
the velocity of an object at any given instant in time
average velocity
displacement divided by the total time
vector
a quantity with strength and magnitude and direction represented by an arrow
acceleration
a description of how fast velocity is changing and/or direction of that change
force
a push or a pull interaction between two objects
net force
sum of all forces acting on an object
inertia
the property of an object that resists changes in its motion (not a force)
friction
a force that opposes or resists motion
inclined planes and pulleys
reduce the amount of force required to move an object by increasing the distance the object travels
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