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motion
change in position
frame of reference
something that is not moving with respect to an observer that can be used to detect motion
displacement
overall change in position
Vector
a measurement that has both size and direction and may be represented by an arrow
velocity
the speed of the object and its direction
how does an arrow represent velocity
length= speed
the way arrow points= direction
speed
to describe how fast something is going
average speed
distance traveled/ time it takes
constant speed
when an objects speed doesn’t change
when does velocity change
when the speed changes, the direction of motion changes, or both
acceleration
if the speed but not the direction of an object is changing, the object is accelerating
calculating acceleration
final velocity-initial velocity divided by time
Note
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