Position-Time Graphs
Position-Time Graphs (Cont.)
Vectors vs. Scalars
Speed vs. Velocity
Distance vs. Displacement
100
What Is the velocity of this graph?
10
100
If the line on a position-time graph goes up in a straight line, what is happening to the object?
the object is moving at a constant speed
100
What is a vector quantity?
A quantity that has both magnitude and direction.
100
what is the term for how fast an object is moving without considering its direction
speed
100
What is the distance of this graph
60m
+30m+0m+[-30m]
200
What Is the speed of this graph?
10 m/s
200
if the line on a pt graph is flat what is happening to the object
the object is not moving
200
What is a scalar quantity?
A physical quantity that is described by its magnitude.
200
what is the term that describes the speed of an object and the direction its moving
velocity
200
What is the displacement of this graph?
0 m
300
What is the Speed of this graph?
3 m/s
300
if the line on a pt graph curves upward, what is happening to the objects speed
object is speeding up
300
Is a vector the same thing as velocity?
No, but velocity is a quantity of a vector!
300
what is the key difference between speed and velocity
velocity includes direction while speed does not
300
What is the definition of distance on a graph?
The distance is the WHOLE route, or every foot step taken.
400
What is the Velocity of this graph?
2 m/s
400
if the line on a pt graph goes down in a straight line what is happening to the object
object is moving backwards
400
What is an example of a vector quantity?
Velocity, Displacement, Force, Acceleration
400
if an object changes direction but keeps the same speed what happens to its velocity
velocity changes signs (+ / -) because the direction changes
400
What is the definition of displacement?
Displacement is "change in where I started" or from point A to point B.
500
Does this graph have a velocity?
No
500
if the line on a pt graph starts to steep but then gets flatter what is happening to the object
object is slowing down
500
What is an example of a scalar quantity?
Distance, volume, density, speed, energy, mass, and time
500
if an object is not moving what is its velocity
zero
500
Why are distance and displacement so different?
Distance is the whole thing, and displacement is from point A to point B.