Digital Agenda August 26: Net Force Cornell Notes

Standards:
MS-PS2-2:  Plan an investigation to provide evidence that the change in an object’s motion depends on the sum of the forces on the object and the mass of the object.




Objectives

·     1. Define balanced and unbalanced forces, net force, and explain how the sum of forces on an object  affects the object's motion by watching a video, taking Cornell notes, and passing a post-quiz with a 3 or better.

1. Do Now: Balanced and Unbalanced Forces Pre-Quiz


Independent
1. Watch THIS VIDEO and take the following Cornell Notes:

Vocabulary
Balanced Forces
Unbalanced Forces
Net Force
Sum
Magnitude
Newtons
equal
opposite

Questions
1. What conditions have to be present for forces to be balanced?
2. When forces are balanced, what is the net force on the object?
3. When the net force is zero, is the object moving?
4. Draw and example of a balanced force, and explain why the forces are balanced.
5. What conditions have to be present for forces to be unbalanced?
6. When can the forces on an object be unbalanced when both forces are equal in size?
7. Draw and example of an unbalanced force, and explain why the forces are unbalanced.
8. Stop the video at 3:00, and summarize what you have learned so far.
9. Describe how to calculate Net Force. What happens when there are balanced forces? Unbalanced forces?
10. Draw and solve for the example Net Force problem at 3:13. What is the Net Force on the box? What direction is the box moving in? Is it balanced or unbalanced?


Summary: Today I learned.....



Cornell Notes Criteria for success:
- Notes are set up in Cornell Note format
- All vocabulary is defined in student friendly language (not copied from google)
- 8 or more of the questions are answered fully AND correctly, using information and examples from the video
- A summary of what was learned is at the bottom, using 2-3 complete sentences.

4= All success criteria is met
3= 3/4 success criteria is met
2= 2/4 success criteria is met
NP = none of the success criteria is met


Optional (ONLY AFTER YOU ARE FINISHED!!!!)
1. Play with this PhEt simulation to explore how changing masses affect the amount of force needed to move an object

2. Play the NET FORCE GAME and try to beat a score of 6 (the highest anyone has scored has been 19)

3. Watch THIS VIDEO on roller coaster Physics

4. Play the roller coaster building game