Review of quarter 2

             I can't believe that we finished the second quarter already… half of the "school year" is over! This quarter was more focused on forces and projectile motion. Projectile motion was shown when we did the rocket lab. We had to use Kinematics to predict where we thought our rocket was going to land. And if we were lucky enough we hit Mr. Blake.. During the forces unit we learned about Newton's 3 laws. His first law was more demonstrated during unit five when we had to show that objects either in motion or rest will remain in motion or rest unless acted upon by an outside unbalanced force. In unit 6 we talked more about newton's 2^nd and third law. Newton's second law stated that force equals mass times acceleration. Newton's third law says that any objects that have contact have equal and opposite reactions.

            This quarter was a little more difficult for me because the forces unit was harder for me to understand but I can't wait to see what's next in physics! Our table also bonded after physics by going out and getting shave ice together :)!

Unit 6: Forces with motion

So yesterday in Physics we did the Air Track lab. I didn't do a blog yesterday because Jon had told us it wasn't necessary, so instead today I'm going to be posting two blog posts. So the air track lab was supposed to demonstrate the relationship between force, mass, and acceleration. In others words, it was testing Newton's 2^nd law, or F=Ma. We tested if force was increased how acceleration would change. We found out that force and acceleration were directly related. We also tested to see what the change would be if we increased the mass. We found out that acceleration and mass are inversely related. We ended up collecting all the data as a class because it took too long to collect data individually in our own groups.  


I chose this picture because it shows that the Normal forces and the weight forces cancel out but using the F=MA equation we could calculate force and mass and acceleration.The cart is accelerating forward.

Unit 5: Free body diagrams

            Today we continued Unit 5 and learned about free body diagrams. We also learned about the four types of force that are involved in free body diagrams. Weight force, Normal force, Friction, and Tension force. Weight force is how much something weighs. Normal force has to do with contact. Friction is what slows objects down it goes the opposite direction that the object is going.

            After we learned the different types of forces we learned how to set up the problem. The first step was to read the problem, then we were supposed to determine the forces that are acting upon the object, and finally were had to determine the direction that each force is acting.

            We also learned how to construct a free body diagram. We would draw the object as a point or box, then draw each force as an arrow, then attach each arrow to the point or box, and finally aim the tip of each arrow in the direction the force is acting in.

              In this picture if we were to make a free body diagram of the earphones we would be able to see the forces. The weight force is pushing down with gravity and the normal force is pushing up with the force from the ground.

Unit 5: Newton's Laws!

We began unit 5 today even though we were missing Mr. Blake :(! Unit 5 was about Newton's 3 laws. The first law stated that any object in motion will stay in motion unless acted upon by an outside unbalanced force. That law also complied with objects at rest. For an example we had to do the "tablecloth trick," in which we used a pen and a paper. We had to remove the paper from below the pen without making the pen tip or fall. It was pretty hard but eventually our group got it! As long as we kept a constant pull and didn't make sudden movements the pen stayed standing up.

            The second law of Newton stated the equation to find force, F=MA, force equals mass times acceleration. We used this when we were doing the practice problems in the packet. We also learned that force and acceleration are directly related and mass and force were inversely related!

            The last law of newton stated that between interacting objects there are equal and opposite reactions. We learned more about this when we did the diagram of the skinny guy and the fatty and how if they collided which way they would be traveling and how fast their acceleration was!

            Today was kind of weird without Mr. Blake but Jon did a pretty good job filling in for Mr. Blake! My picture below is a picture I took a while ago. It reminded me of Newton's first law about how objects at rest will stay at rest unless acted upon by an outside unbalanced force. This paper didn't move while I was taking the picture because it wanted to remain at rest and there was nothing to make this paper move. 

Unit 4 part 2: ROCKETS :D

            Today we continued working on Unit 4, which was 2-D kinematics! We had a short day today but it was probably one of the most fun days! We got to launch rockets! We had four different caps to try, each cap was able to hold up to a different amount of air pressure. Our goal was to use 2-D kinematics to try to predict where our air rocket would land! We used the super cap, which could hold the most pressure. We predicted about 83m. At first we thought that the distance we predicted was crazy but we tried it anyway. At first it didn’t quite get to Mr. Blake, but then we realized that we didn’t count air resistance so of course it wouldn’t quite make it. But we tried again and instead of Mr. Blake being the target Jon substituted. We would’ve hit him if he didn’t move…. But all in all this was a SUPER fun day and I hope there are many more fun days!

This is a picture of Aleina and I right after we tested one of the caps!