Units
Terms
Meanings of Symbols
Acceleration (positive,negative, or 0?)
Velocity (positive,negative,0, both, or "can't tell?")
100
Time
s
100
A physics measure that has units of magnitude, but not direction.
Scalar
100
a
Acceleration
100
negative
100
Zero
200
Displacement
meters
200
A physics measure that has units of magnitude and direction.
Vector
200
Change
200
Zero
200
Negative
300
Velocity
m/s
300
How fast something is moving, no matter the direction.
Speed
300
v
velocity or speed
300
Positive
300
Can't tell. Could be slowing down with a positive velocity, or could be speeding up with a negative velocity.
400
Speed
m/s
400
How far something has moved, and in which direction
Displacement
400
x
position
400
Zero
400
Both. Positive, then negative. And zero in between.
500
Distance
m
500
This describes how much velocity is added or subtracted each second
Acceleration
500
v0
Initial velocity
500
Negative
500
Positive
600
Acceleration
m/s2
600
This describes how much something's position is changing each second, and in which direction.
Velocity
600
Displacement or "change in position"
600
Positive
600
Both. Negative, then positive. And zero in between.