1. Day 23 10/5/10 TOPIC: Converting an xt Graph to a vt Graph
OBJECTIVE: I can convert a Position v. Time Graph (xt Graph) to a Velocity v. Time Graph (vt Graph)
STARTER:
Speed - the rate at which position changes
Constant Speed - speed that does not change
Instantaneous Speed - speed at a given moment
Average Speed - total distance divided by total time
Velocity - a quantity that specifies both speed and direction

2. Agenda

3. Write 3-4 true statements about the xt graph.

4. SLOPE of XT gives VELOCITY3 2 1
t (s)
INSTRUCTION
Velocity 1

5. Example 3: Shoulder Partner Practice Convert an xt Graph to a vt Graph
X (km) 3 2 1 -1 -2 -3
t (hr)
v (km/hr)
SHOULDER PARTNER PRACTICE

6. Example 4: Shoulder Partner Practice Converting an xt Graph to a vt Graph
v (m/s) 3 2 1 -1 -2 -3
t (s)

7. Units Speed Units Velocity Units
Some DISTANCE & its UNIT
Some TIME & its UNIT
Speed Units
Speed is a magnitude; Speed includes a value, & units.
Velocity Units
Velocity is a vector; Velocity includes a value, units, & DIRECTION