Specifications

© 1997, 2004, 2006 TEXAS INSTRUMENTS INCORPORATED GETTING STARTED WITH THE CBR 2™ SONIC MOTION DETECTOR 27
Activity 4—Bouncing Ball Name ___________________________________
Data collection
1. What physical property is represented along the x-axis? _____________________________________
What are the units? ___________________________________________________________________
What physical property is represented along the y-axis? _____________________________________
What are the units? ___________________________________________________________________
2. What does the highest point on the plot represent? ________________________________________
The lowest point? ____________________________________________________________________
3. Why did the Ball Bounce App flip the plot? _______________________________________________
4. Why does the plot look like the ball bounced across the floor? _______________________________
Explorations
5. Record the maximum height and corresponding time for the first full bounce. __________________
6. Did the graph for A = 1 match your plot of the data from the first complete bounce? ____________
7. Why or why not? _____________________________________________________________________
8. Complete the chart below.
A How do the data plot and the Yn graph compare?
1
2
0
-1
9. What does a positive value for A imply? __________________________________________________
What does a negative value for A imply? _________________________________________________
What does a zero value for A imply? _____________________________________________________
10. Record the maximum height and corresponding time for the last full bounce. __________________
11. Do you think A will be bigger or smaller for the last bounce? ________________________________
12. How did A compare? __________________________________________________________________
What do you think A might represent? ___________________________________________________