1. Physics 11
Mr. Jean
March 22nd, 2012

2. The plan: Video clip of the day Surface Friction Question
Brightstorm Video
Force Diagram Questions
Go over Unit Test Solutions

3. Frictional Forces:
Example #1: An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3.
A) Draw a force diagram representing this situation.
B) What is the force of friction?
C) What force is required to move the student?
D) What is the students acceleration if 300N of force are applied to them?

4. Frictional Forces:
Example #1: An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3.
A) Draw a force diagram representing this situation.

5. Frictional Forces:
Example #1: An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3.
A) Draw a force diagram representing this situation.

6. Frictional Forces:
Example Question: An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3. Calculate the following:
B) What is the force of friction?

7. Frictional Forces:
Example Question: An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3. Calculate the following:
B) What is the force of friction?

8. Frictional Forces:
An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3. Calculate the following:
C) What force is required to move the student?

9. Frictional Forces:
An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3. Calculate the following:
C) What force is required to move the student?

10. Frictional Forces:
An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3. Calculate the following:
D) What is the students acceleration if 300N of force are applied to them?

11. Frictional Forces:
An 80kg student is dragged across the floor. The coefficient of friction between the floor and the student is 0.3. Calculate the following:
D) What is the students acceleration if 300N of force are applied to them?

13. Brightstorm: http://www.brightstorm.com/science/physics/
Check out these videos under the section titled “Newton’s Law’s of motion”

14. Force Diagrams: Complete the following force diagrams with a partner.
E, F, G

15. Unit Test Solutions: