1. Physics 11 Dynamics X Mr. Jean

2. The plan: Video clip of the day Tomorrow’s force diagram questions Forces & Acceleration 2d forces

3. Force Diagram: Tomorrow: –You will be required to draw force diagrams for certain basic situations –Handed in for marks

4. Scoring System: 5 pts per diagram –2 pt proper diagram –2 pt proper forces & variables –1 pt proper assumptions Total of 4 situations

5. Combining Forces & Kinetics Understanding motion is really only accomplished once you can see how the forces interact with matter. Consider the following.

6. Example: Old TV’s and computer monitors produce pictures by firing electrons into a screen. The viewers sees the electron as a light change and this creates the resulting image.

8. TV Example: An electron with mass 9.1 x 10 -31 kg is accelerated from rest. Find the velocity of the electron if it experiences 5.8x10 -15 N over a distance of 0.0035m.

9. Draw the “Force Diagram”:

10. What is the acceleration?

11. Acceleration?