Post #7 - Unit 1, 2, 3 Summery

Unit 1- Introduction to physics
In this unit we covered accuracy vs. precision, the different types of graphs, scientific notation, dimensional analysis, linearizing data, and qualitative and quantitative observations. We covered a lot of topics in about two days. 


Unit 2 - Kinematics
In this unit we covered kinematics (study of motion), motion maps, position vs. time graphs, velocity vs. time graphs, and scalar and vector quantities. The main topic for this unit was determining the difference between scalar and vector quantities. In this unit we were able to convert position vs. time graphs to velocity vs. time graphs.


Unit 3 - Uniform Acceleration
In this unit we covered acceleration vs. time graphs, stacking curves, free falling, gravity's acceleration, and formulas for kinematics. In this unit we were able to convert position vs. time graphs to velocity vs. time graphs to acceleration vs. time graphs.

I took a picture of me after my baseball game of me throwing up a baseball because I feel that this was stressed the most in the three units we covered. I also feel that this was the most confusing for me. The main thing that I needed to understand was that the ball accelerated down the entire time it was in flight because of the acceleration of gravity. There is always gravity because if there were no gravity, everything would float into space. You can use the three graphs position vs. time, velocity vs. time, and acceleration vs. time to graph the ball. These past three units were full of new things I did not know about and I feel I have a better idea of what physics is about.