1. Vocabulary Distance Velocity Speed Average Speed Displacement
Acceleration
Scalar
Vector

2. Distance & Displacement
Page 3 in your comp book

3. Displacement vs. Distance
the COMPLETE length of the PATH traveled by a moving object
DISPLACEMENT
the length of the STRAIGHT LINE PATH from a moving object’s ORIGIN to its FINAL POSITION

4. Scalar vs. Vector SCALAR VECTOR
A measured quantity that has NO DIRECTION
Examples
Distance, Time, Mass, Volume
VECTOR
A measured quantity that HAS DIRECTION
SIGN SHOWS DIRECTION
Example
Displacement

5. One more thing…
What is the Pythagorean Theorem?
A2 + B2 = C2

6. Examples A bird flies 5 meters north, then 7 meters south
Sign of displacement refers to the direction
the object is moving .
A bird flies 5 meters north, then 7 meters south
Distance =
Displacement =
A ball rolls 5 meters north.
Distance =
Displacement =
A cat runs 8 meters west.
Distance =
Displacement =
5 m
12 m
8 m
+5 m
-2 m
-8 m

7. Example A man drives his car 3 miles north, then 4 miles east.
Distance
7 mi
3 mi
North
Displacement
5 mi
Northeast
What distance did he travel?
What is his displacement from his point of origin?

8. Brain Break
Vector

9. Velocity vs. Speed VELOCITY SPEED
change in DISPLACEMENT occurring over TIME
MAGNITUDE and DIRECTION
VECTOR
SPEED
change in DISTANCE occurring over TIME
MAGNITUDE ONLY
SCALAR

11. How to work a problem G – given U – Unknown E – Equation
S – Substitute
S - Solve

12. Question 1
What is the speed of a cheetah that travels 112m in 4s?
G- U- E- S- S-

13. Graphing Speed & Velocity

14. What does this remind you of? What is happening in this
Average Velocity
What does this remind you of?
SLOPE OF A GRAPH!
What is happening in this
graph?
INCREASING
SLOPE
Moving with
CONSTANT
positive velocity
Moving with
INCREASING
velocity
Motionless
Object
CONSTANT
POSITIVE
SLOPE
CONSTANT
ZERO
SLOPE