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# Motion Review

set of criteria used to describe the position and motion of an object frame of reference
where an object is located position
SI unit for time seconds (s)
SI unit for distance meters (m)
SI unit for speed and velocity meters/second (m/s)
quantity that has magnitude only scalar quantity
quantity that has magnitude and direction vector quantity
change in position motion
study of matter and energy ; how things work physics
total path of motion distance
shortest path of motion between start and end points displacement
the way to draw vector diagrams "tip to tail" method
displacement when object comes back to its starting point zero
describes an object that is NOT moving at rest
examples of scalar quantities speed and distance (examples of....)
examples of vector quantities velocity, acceleration & displacement (examples of...)
south and west considered "negative" directions
north and east considered "positive" directions
movement in a straight line linear motion
movement that forms a right triangle 90 degree motion
a^2 + b^2 = c^2 ; used to find magnitude of displacement in 90 degree motion Pythagorean Theorem
change in velocity over time acceleration
starting velocity vi
ending velocity vf
SI unit for acceleration meters/second/second ( m/s^2 )

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