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Apologia Physics M1

Motion in 1 Dimension

TermDefinition
physics attempts to EXPLAIN everything seen in nature
Thomas Aquinas listed presence of MOTION as one of his 5 arguments for the existence of God
displacement the change in an object's POSITION
vector quantity physical measurement that contains DIRECTIONAL information
scalar quantity physical measurement that does NOT contain directional information
velocity how quickly an object's POSITION is changing
speed how quickly an object travels a certain DISTANCE
Velocity and displacement are both _______________ quantities. vector
SI unit for velocity m/s (aka meters per sec)
instantaneous velocity the velocity of an object for an infinitesimally SMALL time interval
average velocity the velocity of an object over a FINITE time interval
VELOCITY can be seen by looking at the SLOPE of the curve on a _______________________ ___________ ___________ graph. POSITION versus TIME
If the line on a graph rises, the slope is ________________ . positive (+)
If the line on a graph falls, the slope is __________________. negative (-)
If the line on a graph is flat, the slope equals __________________. zero
Velocity is relative.
What an observer actually sees is the ________________ between his velocity and the velocity of what he is observing. difference
a = change in velocity divided by change in time
If acceleration and velocity have OPPOSITE signs, the object is slowing down.
If acceleration and velocity have IDENTICAL signs, the object is speeding up.
Acceleration is the agent by which velocity CHANGE occurs.
Acceleration can be seen by looking at the SLOPE of the curve on a _______________________ ___________ ___________ graph. VELOCITY-versus-TIME
The area under a curve is studied in calculus.
If VELOCITY is zero, acceleration does NOT have to be zero.
If ACCELERATION is zero, velocity does NOT have to be zero.
An object will SPEED UP whenever its velocity and acceleration have the same signs.
Acceleration is the _________ _________ of ______________ of an object's velocity. time rate (of) change
Created by: MrsHough
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