Semester 1 Review

This semester we learned quite a bit. In unit 1 we learned about accuracy precision, metric conversions, the different types of graphs, graphing, and scientific notation. We focused on graphs and looking at graphs and then figuring out the relationships between the two variables. We also looked at equations of graphs. 

In unit 2 we learned all about scalars and vectors. We learned distance and speed are scalars, and that displacement and velocity are vectors. In this unit we mostly focused on velocity, how to find velocity, V=d/T, position vs. time graphs, velocity vs. time graphs and all of the graphing rules. 

In unit 3 our focus was on acceleration. We learned how to complete kinematics problems which involved the equations DAT, VAT & VAD. We also focused on throwing up balls and the acceleration a ball goes through when it is thrown up which is fast, slow, stop, slow, fast. 

In unit 4 our focus was projectiles. The problems were just like the ones in unit 3, but this time we had values on the x and y axis. The main rule for this lesson was that axis are independent. The problems were complicated at first, but once you got the hang of it they are good. We mostly worked with DAT for these problems. 

In unit 5 our focus was vectors. In this unit more than any we had to use math, trigonometry specifically. We had to use the bureku method and split up the diagonals, then use tan, sin & cos. We also learned about frictional force which is a force that opposes force or impends force. We learned what normal force is and how when we are on a scale that is what is measured. We also focused on newtons three laws, law of inertia, law of acceleration, and action reaction. For the problems in this unit we had to create diagrams, that is key and then from there we could get the answers. 

In unit 6 we focused on newtons second law. Fnet= ma. For problems involving pulleys we had to remember that the acceleration and tensions of the objects were the same because they are all on one string. We also learned about friction and how there are two types, static and kinetic. We learned about one more equation too, force friction=coefficent of friction • normal force. 

I enjoyed that almost every day in class we did something fun like a lab that involved physics but was enjoyable at the same time. The human pendulum, the pool projectile experiment and the slip n slide were some of the funnest. I also enjoyed how the classroom is always fun. I never feel uncomfortable or confused because I know I can always ask questions. 

Unit 5 & Unit 6 have been challenges of mine because of the normal force, friction and diagrams. The diagrams are what always stump me and they are the key to the answers. Another challenge for me was learning about acceleration. I also get confused whether acceleration is positive or negative. Other than those challenges, physics class has been fun, and I feel like I have been learning a lot!