1-9

TPJ by John Stumpf Class on Friday the 9th of January started out with a Daily Question. This question asked about the total force that is used to stop a 50 kg person in a car who is traveling at 35m/s whether they stop in .5 or .002 depending on if they are wearing their seat-belt. The question was to be set up as a formula of E’F x Delta t = m x delta v. The outcome was with the seat belt it would be a -3500N force and without it, it would be -875,000N. The Daily Question was reviewed and any questions were answered by Mr Manning. The previous lab from the day before was given time to be worked on in partners then it was submitted. This lab overviewed how momentum is affected before and after an impact with many different variables such as velocity, mass, and the type of impact whether it be bouncing off one another or sticking together. Once the lab was handed in the class reviewed the material on the test on the smartboard. The next step in class was that the students were given the rest of the period to work on “Conservation of Momentum Problems”. These are pages 15 and 16 in your physics notebook. Before starting a short instruction was given then the students were sent out to work. In this activity students were required to calculate the before and after total momentums and to also plug in the missing value. Most students completed it during class but those who did not were to finish it up over the weekend for homework.

**Agenda** Daily Question/ review Lab review Pgs 15,16 classwork
 * -STOP that Car![[image:car.JPG]]**