Thursday is Not Friday

But it feels like it today for some reason...

Honors Physics introduced the concept of acceleration to their motion arsenal and tied all the concepts together with one big kinematics bow. Things to keep in mind are that acceleration targets both the speed and direction of motion and is a rate function - it does not say how much the velocity changed, on how quickly. The kinematics formulas that you are using right now, will make another appearance next chapter and pop up in problem solving throughout the book. Get comfortable working with them from the get go and save yourself a lot of headache later on.

Physics B conducted a lab investigation that allowed students to examine the properties of motion that we discussed in class - displacement, velocity and acceleration. A low-friction cart was propelled up and down a ramp and its motion was tracked with a motion detector. The resulting graphs were analyzed to get quantitative details of the motion. We'll go over the lab tomorrow, so make sure you have your synopsis completed.

Physics F took up a discussion of acceleration, the rate of change of velocity. It either the speed or direction of travel changes, the object is being accelerated and the acceleration value itself reports how quickly the velocity change occurred. Like velocity, it has direction and you have to pay careful attention to the signs for velocity and acceleration to determine the impact of the acceleration on the object's motion. Time was also taken to examine a variety of graphs describing motion. We'll continue on with this tomorrow and may have time to tie air resistance to our discussion of free fall.

Physical Science went over their dimensional analysis problems and we took time for more practice. Work to get this skill mastered and stay for extra help or get additional practice problems from me, if necessary.

Homework

Honors Physics - Practice 2C #1,3; Practice 2D #1,4; Practice 2E #3,5,6 for Monday
Physics B: Complete lab writeup
Physics F: - p.25, 26 of ancillary reading #14-21
Physical Science: Problems from whiteboard:

1. 256 g = ? Gg
   
2. 37.6 mm = ? km
   
3. 1.47 x 10¹² cg = ? μg
   
4. 2 x 10⁷ = ? mg