1. Physics 11
Mr. Jean
May 4th, 2012

2. The plan: Video clip of the day Vertical Elastic Collisions
Conservation of Momentum

3. Conservation of Total Mechanical Energy:
Example: Alex is sitting in an elevator car. The combined mass of the elevator and Alex is 1000kg. While moving downwards at 10m/s the cable snaps. The car falls 400m onto a huge spring with a spring constant of 1000N/m.
Assuming the car actually gets stopped by the spring what was the total compression of the spring when the car reaches zero?

4. The picture:

5. Conservation of Energy:
Ek1 + Ep1 + Ee1 = Ek2 + Ep2 + Ee2

8. To read this weekend:
Chapter #7
Section 7.3
P. 310 – 317

9. Energy Skate Park (Phet)
Directions: Check out these online labs. Change the different variables and situation to see how the results change.
There is not formal “To Pass In” piece to this; however these are good demonstrations to help develop the pictures of motion.

10. To do: 1) Physics of Toys 2) Science Fair
3) Final Project: Rube Goldberg
4) Chapter #6 review
5) Chapter #7.1 and 7.2 questions