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)

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)

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)

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