1. Velocity of a Shopper at the Mall
Distance In
Stores
California Pizza
Kitchen
Champs
Aeropostale
Abercrombie
Kay Jewelry
Enter/Exit 10 20 30 40 50 60 70 80 90
Time (minutes)

2. Velocity of a Shopper at the Mall
Distance In
Stores
California Pizza
Kitchen
Champs
Aeropostale
Abercrombie
Kay Jewelry
Enter/Exit 10 20 30 40 50 60 70 80 90
Time (minutes)

3. Velocity of a shopper at the mall
How do you find the slope of a line?
In a Distance vs. Time graph, what is the meaning of the slope of the line?
Velocity (remember V = d/t)
Distance in Meters 70 60
What does it mean when the line is flat?
Not moving
Compare A to B and B to C. What’s the difference in Velocity?
In B to C the shopper is slowing down 50
What does it mean when the line is pointing down?
Shopper is headed back toward reference point (the entrance) 40 D C 30 E B 20
Rise 10
Run A 10 20 30 40 50 60 70 80 90
Time (minutes)

4. Acceleration of a Speeding Car
In a velocity vs. time graph, what is the meaning of the slope of the line?
The acceleration (a= V/t) VE L O C I T Y In m/ s
Compare A to B and B to C, what is the SAME about these intervals?
In both intervals there is POS acceleration (SPEEDING UP!!) 10 E F
Compare B to C and C to D, what is DIFFERENT about these intervals?
B to C POS acceleration (speeding up)
C to D NEG acceleration (slowing down) C D 5 B
A to B: 5 m/s (rise)
10 s (run)
B to C: 2 m/s (rise)
15 s (run) A 10 20 30 40 50 60 70 80
Time in Seconds