1. Acceleration Cart Pre-Activity
Seo
Physics

2. Objectives
To find the acceleration from the relationship of the cart’s velocity and the amount of time it took
To look at the difference of each graphs in accordance to position
To graph v vs. t and a vs. t graphs

3. Cart Push Motion Detector on the Bottom
(Set two to three books below)
Collect data shown on the LabQuest Pro
Draw the v vs. t shown on the LabQuest Pro
Then, draw the acceleration graph
Cart Push

4. Cart Push Part 2. Motion Detector on the Top
(Set two to three books below)
Collect data shown on the LabQuest Pro
Draw the v vs. t shown on the LabQuest Pro
Then, draw the acceleration graph
Cart Push Part 2.

5. Cart Release Motion Detector on the Top
(Set two to three books below)
Collect data shown on the LabQuest Pro
Draw the v vs. t shown on the LabQuest Pro
Then, draw the acceleration graph

6. Cart Release Part 2. Motion Detector on the Bottom
(Set two to three books below)
Collect data shown on the LabQuest Pro
Draw the v vs. t shown on the LabQuest Pro
Then, draw the acceleration graph
Cart Release Part 2.

7. 1) Place the Cart on the Ramp with Motion Detector connected with LabQuest, respectively
2) Place two to three textbooks below the metal Ramp
3) On the LabQuest, set the graphs on
v vs. t graph plot
Up the ramp is a positive direction
Down the ramp is a negative direction
4) Collect Data
5) Plot the v vs. t graphs for respective tasks
6) Translate the graphs to a vs t. graphs
Activity Procedures

8. Roles for this Activity
4 per group:
Tech Person with LabQuest Pro
(Explain to everyone in the group)
Motion Detector Caretaker
(make sure that the Cart doesn’t bump on the Motion Detector)
Cart Pusher
Data Organizer

9. Signs Table

10. Activity In-class Write out
Seo
Physics

11. Conclusion
Please answer in complete sentences
Does a positive acceleration always mean that an object is speeding up? Explain why or why not.
Does a negative acceleration always mean that an object is slowing down? Explain why or why not.
Is there a relationship between the sign of the velocity and the sign of the acceleration that would indicate whether the object is speeding up or slowing down? Explain this relationship.
Suppose a car is traveling in the negative x-direction and comes to a stop. What is the sign of that car’s acceleration? How do you know?