blog post 14

this is really late but i need the little bit of credit this will give me to help my grade a little bit. i got a D on my last exam so I need all the help i can get. I really forget what we learned during this time period but im guessing it had to do with momentum. Momentum is conserved and never can be be destroyed. Momentum in equals momentum out. so like for a grenade momentum is zero at the beginning and if you add up the shrapnel after the explosion it will equal to zero again. This is a picture of killahs. we are like grenades cause we explode. haha or something like that

This is the great Hayden Wills, a.k.a Swollen wills. I chose him as my final blog post picture because he shows a lot of good physics concepts when this picture was taken. His legs show good potential spring energy and the amount of potential spring energy will be unleashed into kinetic energy on number 36. i would not like to be that guy. He also has spring potential energy in his arms and those will also be unleashed and increase the energy given to number 36. his momentum has to equal to zero because he started at zero, the way he will do that is by causing number 36 to go backward at the same velocity he is, thus creating his momentum back to zero. Hayden Wills or swollen wills helped me to learn about physics in a fun and helpful way. I really enjoyed learning physics this semester through these types of blog posts that relate it to real life. He is a killer.

Energy

This week we learned about energy and the different types. There is potential and kinetic. Potential can be broken up into potential gravity and potential spring. maximum potential energy is equal to the maximum kinetic energy. this is because Energy in equals Energy out. Similar to momentum energy is conserved. In this picture we are standing at pali lookout and we have a lot of gravitational potential energy.

yea ours broke

I thought our design was good. We had a crumple zone at the bottom along with feathers and crumpled tissue paper to lengthen the impact time with the cement. We had wings attached to the sides to slow down so the force is not as great. we also had the egg inside a little baggie filled with feathers. If the device fell like it is in the picture, we might of had a chance. During the fall the device was flipped over and the egg was smashed. We did not apply for wind variation and next time would make the device a lot different. overall the idea was good and should work in the future if it falls like the way we planned it.

Linear Momentum

This week in physics we learned about Linear Momentum on one axis. The si unit for momentum is kg x m/s. This is because mass times velocity is equal to momentum. Momentum in is equal to momentum out which means that everything must start and end with the same momentum. So a heavy person running slow will probably have the same momentum as a lighter person running faster than him. This is why in football, if your small, you should run as fast as you can into them. In this picture Kory has more momentum than the guy on the ground because even though their mass is the same, Kory has more velocity which means he has more momentum.

Momentum

Momentum is the product of mass and velocity. Momentum in = momentum out. This means that momentum can never be diminished. it always finishes what it starts out at. In this picture the kamehameha helmet has a momentum of zero. So, if there was a grenade under it, and it exploded into a million pieces, the momentum would still be zero. Zero momentum because if you add up all the pieces, they would equal out to zero.

blog post 3

We are still learning about newtons laws, and fnet problems. but we learned about tension problems with pulley's and things like that. i didn't know what to post a picture of, so i took a picture of a rope. This rope has tension and if it were on a pully both of the tensions would be the same. One rope=One tension.

blog post 2

this week we learned the only problem that matters in this section of physics. fnet=ma. This equation helped me to solve a lot of basic problems and will continue to help me in the future. In this picture the player approaching me is  accelerating past me. I am standing still which makes his fnet greater than mine. My friend took this photo and i dont really know what else to say about this subject. but i need to write a little more to get the full 100 word minimum.

blog post 1

We learned this week about the newton laws. The first newton law we learned about was that objects at rest will tend to stay at rest unless acted upon by an outside force. The picture i choose is of chips on a craps table. The chips are at rest and will stay at rest until something comes along and moves them. Like for example if the dice hits them or if someone picks them up. Also, i won that game jus to let everyone know.

blogpost 8

this week we learned about 2d kinematics. This is when your moving both downward and in another direction. This causes the trajectory to be more of a parabolic shape. We learned how to solve these 2d kinematic problems by using a y and a x axis. This picture shows me jumping both out and away from the rock. This represents 2d kinematics and is a good way to show this subject.

measurements blogpost 2

This is a very late blog post but during this week of physics we learned about measurements. Measurements help us get an accurate reading on things in length, weight, and time. The measurements of length are centimeters, meters, and kilometers. the measurements for weight are gram and kilogram. The measurements for time are seconds. I choose the picture or my dog star because she is 1 meter and a half long. I measured her after taking this picture.

vectors

So i get all my photos off of my facebook cause its just easier than taking them myself right now and my football pictures are the only ones that have me moving. But, this shows vectors because it shows magnitude and direction. Magnitude or "muchness" is showed by the speed im running (which is super duper fast). I am heading in a certain direction which means this picture shows vectors. I am now currently up to date with all my blog posts but for some reasons it says i have 4 of the missing. So, mr. blake when you read this immediately go on your computer and input all my grades. thanks.

Im not even sure if this is late or not

I have learned about acceleration and velocity over time. We did a lab as a group that showed the velocity and acceleration of a ball at its highest point. I learned that acceleration at the top of its trajectory is 9.8 m/s or "g" downward. This is because even though the ball is coming to a stop, it has to accelerate in the other direction to slow down. This is why it is 9.8 m/s, because the gravity is accelerating the ball back towards earth. I also learned that if you throw something up and catch it at the same place, the velocity will be the same but in the other direction. As i drop this baton, it is picking up speed from the acceleration of gravity. if i had thrown it in the air and caught it the same place, it would of had the same velocity.

a little bit late

I mean to do this post last week but i forgot. For this post i decided to talk about acceleration. Acceleration is the change in velocity per unit of time. I choose a picture of me and my friend playing on the beach. In this picture he is accelerating faster than I am and i'm unable to catch him. He is increasing his speed at a constant rate while mine is staying the same. This means i have an acceleration of 0. Constant speed is zero acceleration because acceleration only counts the change of speed. Another good example is gravity which accelerates at 9.8 m/s.

Really late

This post is about three weeks late, and i don't really recall what we were suppose to be talking about. So i will be talking about velocity. Velocity is how fast something is traveling and in which direction. It is distance over time. I choose a picture of me playing football because i am traveling backwards at roughly 1m/second. This shows my velocity which is very low. If someone comes towards me at 100m/second i will not be in a good place. I will probably get destroyed and everyone will laugh at me.

Kinematics

Kinematics is distance, scalars, vectors, displacement, average speed, velocity, and acceleration. I choose this picture of me walking my dog because it shows a lot of kinematics. Distance is the total path length. My distance of travel was around ten miles from my house. I drove to a dog park and then let my puppy play with other dogs there. My displacement was 0 since i left my house went to the dog park and everything, then came back to my house. This made displacement to 0. My average speed, velocity, and acceleration can be shown through graphs and math if i took down data from that day. Sadly i did not so I cannot show the awesome math equations i learned in science class. This is how kinematics is shown in everyday life. 

This assignment was to find something that relates to physics in everyday life. So, for this assignment i choose to take a picture of my text book. This shows the relationship between two variables. When i throw my text books on the ground cause i am mad, there are two variables involved. The force at which I throw the textbook makes the textbook hit the ground faster than if i used no force and dropped it. Also, the point at which i throw the book causes the time in which the book hits the ground to vary. If i stand on a bridge and throw the book, the time spent between my hands and the ground will be different than if i am just throwing it from where i stand. So, i now know how physics interacts in my everyday life.

Who am i

My name is Pono Choy and i am a senior at Kamehameha. I live in Alewa Heights in Kalihi with my family of 5. I have an older brother and a younger sister that either went to or are in Kamehameha. I like to play sports and hang out with my friends and family. I have taken biology and chemistry already, and than took a year off to focus on other subjects. Science is not my worst class, but not my favorite class either. I am taking college algebra this semester and hopefully taking trigonometry next semester. I would like to pass this course with an above average grade. I choose this picture because i like hanging out with my friends so i thought i would put in a picture of me doing just that. This is me summarized in a hundred words while talking about the stuff mr. blake wanted covered.