1. Reference Point Scalar Vector Position Distance Displacement Speed
Vocabulary to Know!
Reference Point
Scalar
Vector
Position
Distance
Displacement
Speed
Average Speed

2. Reference Point
Def: a point that all motion will be measured relative to the Starting Point
This is the starting point.

3. Two Types of Units ____________:
Unit includes only objects magnitude (numerical value)
Examples:____________________
Unit includes magnitude and direction
Example: going 100 mph to the East
Example:_____________________________________________________

4. Two Types of Units Scalar:
Unit includes only objects magnitude (numerical value)
Example: speed, distance
Vector:
Unit includes magnitude and direction
Example: going 100 mph to the East
Example: Velocity, acceleration, force, displacement,

5. Position
Def:____________________________________________________________
Symbol =_____
Unit = _______
Scalar or Vector?
Use the position vs time graph to calculate the speed of the bug using s=d/t_______________

6. Position
Def: a point some distance and direction from my reference point
Symbol = x
Unit = meters (m)
Scalar
Use the position vs time graph to calculate the speed of the bug using s=d/t_______________

7. Distance
Def:_______________________________________________________________
Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my distance?
?_______ miles to Dallas
?_______miles from Dallas
Total miles driven (distance)?___________

8. Distance Def: refers to the total distance traveled
Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my distance?
?_______ miles to Dallas
?_______miles from Dallas
Total miles driven (distance)?___________

9. (Δx = xfinal – xinitial) =___________ – __________
Displacement
Def:_____________________________
(Δx = xfinal – xinitial)
=___________ – __________
Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my displacement?
Start point = ________
End point = _________
Displacement=____________

10. (Δx = xfinal – xinitial)
Displacement
Def: Refers to the change in position
(Δx = xfinal – xinitial)
Finish pt – start pt
Example: If Dallas was 100 miles away and I drove to and from Dallas, what would be my displacement?
Displacement would be zero
Start point = Houston
End point = Houston

11. Distance vs. Displacement
Scalar or Vector
Unit:________
Formula: ____________Used to find: _________
Symbol:_____
Displacement
Scalar or Vector
Unit:_________
Formula: _____________
Used to find: ___________
Symbol:______

12. Distance vs. Displacement
Scalar quantity
Unit: m, km
Total distance traveled
Used to find Speed
Symbol: d
Displacement
Vector quantity
Unit: m, km
Δx = xfinal – xinitial
Used to find Velocity
Symbol: Δx

13. Distance vs. Time Graphs

14. Speed
Def:_______________________________________________________________
Scalar or Vector Quantity?
Unit:______________________
Slope of the distance vs. time graph
Can be read directly off a speed vs. time graph
Symbol:____

15. Speed
Def: How fast you change position (distance traveled per unit time)
Scalar Quantity
Unit: meters per second (m/s)
Slope of the distance vs. time graph
Can be read directly off a speed vs. time graph
Symbol: s

16. What is the average speed of object in graph?
Def:______________________________
Scalar or Vector?
Unit: ________
Symbol: _______
What is the average speed of object in graph?
Use Rise over run
__________________

17. Average Speed Def: total distance divided by total time
Scalar quantity
Unit: m/s
Symbol: s
What is the average
Speed?
Rise over run
2m/4sec = .5 m/sec

18. What is the speed of Light??
The sun is ___________km from the Earth or _________ miles
It takes light _____seconds to travel from the Sun to the Earth in the vacuum of outer space.
What is the speed of light??
S =______________
Memorize this number!

19. What is the speed of Light??
The sun is 150,000,000 km from the Earth or 93,000,000 miles
It takes light 500 seconds to travel from the Sun to the Earth in the vacuum of outer space.
What is the speed of light??
S = 300,000 km/s
Memorize this number!

20. __________velocity _________velocity _________ velocity
Slope Determines
Velocity!
Describe the motion in the following graphs based on slope using:
“lesser”, “zero”, “greater”
__________velocity
_________velocity
_________ velocity

21. Faster velocity Slower velocity NO (zer0) velocity Slope Determines
Describe the motion in the following graphs based on slope using:
“lesser”, “zero”, “greater”
Faster velocity
Slower velocity
NO (zer0) velocity