1. GRAPHING ACCELERATION

2. Position -v- time
Positive acceleration and a positive velocity = getting faster
Shape - Curve with getting steeper positive slope

3. Position -v- time graphs

4. Position -v- time
Negative acceleration and a positive velocity = getting slower
Shape - Curve with getting flatter positive slope

5. https://lkostmanphysicslog.wikispaces.com/Ch2_KostmanL
Position -v- time
Positive acceleration and a negative velocity = getting slower
Shape - Curve with getting flatter negative slope

6. https://lkostmanphysicslog.wikispaces.com/Ch2_KostmanL
Position -v- time
Negative acceleration and a negative velocity = getting faster
Shape - Curve with getting steeper negative slope

7. Position -v- time
Summarizing positive and negative acceleration on a position vs. time graph…
Everyday Term
Physics Equivalent
acceleration
acceleration and velocity point in the same direction
deceleration
acceleration and velocity point in opposite direction

8. velocity -v- time graphs
Positive acceleration
Shape: Line with positive slope

9. velocity -v- time graphs
Negative acceleration
Shape: Line with negative slope

10. Acceleration v. time graph
area under the curve = velocity change

11. Motion Graphs Summary

12. motion graphs At rest (not moving)
Position vs. time = horizontal line anywhere
Velocity vs. time = horizontal line at t-axis (v = zero)
Acceleration vs. time = Can’t tell)

13. motion graphs Constant velocity
Position vs. time = straight line with positive or negative slope
Velocity vs. time = horizontal line anywhere
Acceleration vs. time = horizontal line at the t-axis (a = zero)

14. motion graphs Constant acceleration Position vs. time = curved line
Velocity vs. time = straight line with positive or negative slope
Acceleration vs. time = horizontal line anywhere

15. Graphing motion Together A & B In words, “Walk This Way”
Sketch v-t graph
Table partners C - H

16. Graphing motion
A: Constant forward v of 1 m/s from 0-3 s, slows to constant forward v of .33 m/s from 3-9 s

17. Graphing motion
B: Constant forward v of 1 m/s 0-2 s, zero v 2-5 s, constant forward v of 1m/s 5-8 s

18. velocity -v- time graphs
At rest = t-axis (v = zero)
Constant, positive velocity = horizontal line = line C
Positive acceleration = lines B & D (What’s the difference?)
Negative acceleration = line A
On your own paper: Draw the position-time graphs for #1-4.