1. The Tortoise and the Hare
Told in words, formulas, and graphs

3. CPS Question Who was fastest? The tortoise. The hare.
They had the same speed.
What do you mean by faster?

4. Group Work
Describe the Tortoise-and-hare race using a position-time graph.

5. CPS Question Who had the fastest average speed? The tortoise.
The hare.
Their average speeds were the same.
Over what time interval?

6. CPS Question
What are the units for speed? m. s.
m·s.
m/s.
m/s2.

7. CPS Question Who had the fastest maximum instantaneous speed?
The tortoise.
The hare.
Their instantaneous speeds were the same.

8. Group Work
Describe the Tortoise-and-hare race using a velocity-time graph.

9. Speeds and Areas
hare
speed
area = distance
tortoise t1 t2 t3
time

10. Smoother Motion x-t plot motion diagram
Young and Freedman, Fig. 2.8
Can we make a v-t plot of this process?

11. Visualize Acceleration
Group Work:
Signs of v
Signs of a
Young and Freedman, Fig. 2.8