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Everything posted by ajgartland22

  1. Kerbal Flight #4 Pre- Flight Briefing Team Name: Jamison Industries LLP Available Funds: $167,464 Vehicle Name: Bird Food Vehicle Parts List and Cost: BACC Solid Booster $3,400 Rockomax Jumbo-64 Fuel Tank $5,750 RE-15 Liquid Fuel Engine $5,300 AE-FF2 Airstream Protective Shell $2,500 FL-T800 Fuel Tank $800 Probodobodyne OKTO $450 Clampotron Docking Port Jr. $800 TR-18A Stack Decoupler x2 $800 Total Cost: $18,000 Design Goals: Our vehicle is designed to achieve stable orbit around Kerbin and serve as a refueling station for vehicles heading to Mun and other parts of space. Launch Goal: We are hoping to achieve the milestone of unmanned satellite in orbit and demonstrate our ability to dock ships to refuel. Pilot Plan: Launch Tilt 10 degrees east Enter orbit and stay with prograde marker. Separate tank from rocket when it is in orbit. Illustrations:
  2. Launch #3 Post Flight Report Launch Time: 10:35 Team Members Present: AJ and Jake Play-by-Play: The launch procedure was followed with complete accuracy. No surprises Photographs: See Attatched (coming soon) Summary: Stable orbit was achieved, and enough fuel was conserved to safely re-enter the atmosphere and make a safe return back to earth. Opportunities / Learnings: We found a good routine and set of maneuvers that we can use to enter orbit. Also with our rocket design, we can add other components to help complete other milestones. Strategies / Project Timeline: Next we want to conduct a Kerbal EVA and start exploring the possibilities of a Munar Landing. Milestone Awards Presented: Stable Manned Orbit: $50,000 Available Funds: $122,376 - $4,912 = $117,464
  3. Kerbal Flight #3 Pre-Flight Breifing Team Name: Jamison Industries LLP Available Funds: $92,376 Vehicle Name: Dodo III Vehicle Parts List and Cost: MK1 Command Pod $600 MK16 Parachute $422 Heat Shield (1.25m) $300 TR-18A Stack Decoupler x2 $800 FL-T400 Fuel Tank $500 LV-909 Terrier Liquid Fuel Engine $390 FL-T800 Fuel Tank $800 LV-T30 Liquid Fuel Engine $1100 Total Cost: $4,912 Design Goals: We used multiple stages to make the most efficient rocket possible to achieve stable orbit. Launch Goal: We are hoping to demonstrate our ability to launch a manned rocket into orbit and safely return it. Pilot Plan: Ignite engines at max thrust Tilt 10 degress Keep speed constant at 300 m/s until 10 km in altitude Cut engine at 70 km and cost to apoapsis At 30 seconds before apoapsis, reignite engine and climb into orbit. Flip rocket "backwards" to direction of orbit Burn engine to slow velocity and direct path of orbit into earth. Enter atmosphere leading with capsule heat shield. Deploy parachute when capsule speed is under 200 m/s Illustrations:
  4. Kerbal Flight #2 Jamison Industries LLP Team Name: Jamison Industries LLP Available Funds: $64,198 Vehicle Name: Dodo II Vehicle Parts List and Cost: MK1 Command Pod - $ 600 TR- 18A Stack Decoupler - $400 RT- 10 "Hammer" Solid Fuel Booster - $400 MK16 Parachute - $422 Total Cost: $1822 Design Goals: We made a cheap rocket to reach 50km of manned flight. We used a very simple design that will end with the cockpit and parachute splashing down as the only remaining body of the rocket. Launch Goal: We are hoping to maintain stable flight and a safe ride for our crew and to achieve manned flight at over 50 km. Pilot Plan: Eject engine from fuselage when it is out of fuel, and pilot the craft back down to earth after 50km has been reached. Illustrations: Kerbal Flight #2 Post Flight Report Launch Time: 10:55 Team Members Present: Jake and AJ (Good luck on your surgery Sky) Play-by-Play: Lift off Straight path with speeds over 900m/s Booster ran out of fuel, detatched from pod. Pod traveled up to a max height of approx. 67,000 m After reaching max altitude, the pod started descending with parachute pointing down. In order to deploy parachute, the pod was turned 180 degrees, so the parachute was at the top of the vessel and able to deploy. Parachute was deployed Successful and safe touchdown on land Photographs: See attatched Time-of-Flight: 7 mins 20 sec Summary: Although the rocket was very simple, we met many public and personal milestones during this mission. Along with the 50 km milestone, this was the first successful mission in which we used a decoupler to detach the spent rocket to allow for a more efficient flight and safer landing. Also, this flight was a lot smoother control- wise, as there was a little tumbling on the way back down but it was at a slow rate and for a very short period of time. Other than that, it was a very smooth flight and all goals were met/ exceeded. Opportunities / Learnings: We gained a lot of confidence at the controls of the craft and built up some more basic skills with staging design and the use of larger rockets. Strategies / Project Timeline: For the next milestone, we will need more research as we have yet to reach orbit in a previous mission. we need to find what kind of power we need to get up there and also the resources required to get us out of orbit. Also, we could branch our strategy away from manned missions and work to place a satellite in orbit while we are still working on the "getting out" part of orbit. Milestone Awards Presented: Manned Launch to 50 km - $30,000 Available Funds: $64,198 - $1,822 + $30,00 (prize $ from previous mission) = $92,376
  5. Launch Time: 10:50 Team Members Present: Skylor, Jake, AJ Play-by-Play: Rocket lifted off from pad Left straight vertical path earlier than expected and started to level off at a low altitude Utilized manual controls to correct curved flight and cause rocket to become unstable Fuel ran out Rocket entered tumbling upward flight, peaked and started back down to earth Hard splash down, but all crew members were unharmed Photographs: See attatched photographs Time-of-Flight: 7 min 46 sec Summary: Our main goal was to achieve manned flight at an altitude above 10 km. Although it was not pretty, we got there and got our Kerbal home safe. Our flight path was not ideal and a big safety concern moving forward will be the stability of our craft and the experience needed by our team members to correctly respond to similar situations. Opportunities / Learnings: Stability is key, and manual controls are not reliable. You need to know what the rocket is going to do before it launches and how you should react to every possible situation. Strategies / Project Timeline: We definitely need to redesign our rocket to achieve the next milestone. In the near future, we will be conducting many test missions to try out new designs and staging in order to find a sound rocket that can take us to the next milestone. Milestone Awards Presented: Launch to 10 km - $10,000 Manned Launch to 10 km - $ 20,000 Available Funds: $70,000 - $5,802 = $64,198 availible
  6. Team Name: Jamison Industries LLP Available Funds: $70,000 Vehicle Name: The Dodo I Vehicle Parts List and Cost: · 4x Standard Canard Wing $700 · FL-T800 Fuel Tank $800 · MK1 Command Pod $600 · MK16 Parachute $422 · LV- 909 “Reliant” Liquid Fuel Engine $1100 Total: $5802 Design Goals: Create a small, easily controllable rocket that will safely transport a Kerbal 10km in altitude and then return to earth. Launch Goal: Manned flight at over 10 km Pilot Plan: 1) Launch 2) Direct increase in altitude until 10 km 3) Level off flight path to stay in atmosphere 4) Deploy Parachute over safe landing area
  7. ajgartland22

    Physics pf basketball

    will beef fuel the writing of more than 30 blogs for Marcus and Jeremy?? Stay tuned to find out
  8. Well its been real Physics C. Here I am, sitting here, writing my last blog post of high school (and maybe forever). This class has been a huge undertaking, but also something that I am glad I attempted. Although the work has been hard and I am far from even coming close to mastering some of these complex concepts, my time with Physics has been amazing and enlightening. It has opened me up to a totally new way of seeing things, and I cant wait until I can put what I've learned into use while I study to become an Architect. Without a doubt I will be taking Physics in College, but anything past mechanics I can just leave to the engineers (hey Skylor and Justin ;)) With that said, I know the knowledge I have gained in all aspects of Physics will forever help me through all professional (and maybe some personal) challenges. I just hope and pray that whatever physics god may be out there will here these last few simple requests: 1. May the downward force of all of my dorm supplies be much less than the maximum possible opposing force of that ratty box I dug out of my garage. 2. Also, when all that crap does come falling out of the bottom of the box, please make sure I'm not halfway up the stairs in front of a group of upperclassmen. 3. And if both of those things do end up happening, please oh please make sure the friction provided by that shirt that got under my feet from the box is enough to keep my feet static on the step. 4. And lastly, please keep any torque on my UCL below 70 ft-lbs - that would be great. But for real, I am so excited to see what the rest of this year of physics has in store for me and for the adventures that are bound to follow.
  9. this is THE best title out of every single blog post on this site
  10. Today we were hitting in the field house as part of our practice and I decided to focus on something I always knew happened, but never knew why. Every time a baseball bat rolls, it always does so in a circular fashion. This can be really annoying especially when it gets set down and then all of the sudden it starts randomly rolling off in a circle and depending on speed, always goes in a different path. The more I thought about it, the more I was amazed that it could be explained simply with physics. The bat is essentially a long rod with two ends of different diameters, and therefore, circumferences. Because there is no part of a bat that allows the top and bottom to rotate independently, the two different ends must rotate at the exact same angular velocity. But because they are different sizes, one rotation of one end will cover more ground than the single rotation of the other end. For an example, think of a bat with one end of the bat with a circumference of 5 cm and the other end with a circumference of 2 cm. If the whole bat is rolled along the ground so the ends spin at 1 revolution per second, that means the top of the bat is covering 5 cm every second, and the bottom is covering 2 cm every second. This change in distance traveled forces the bat to rotate lengthwise to accommodate for the difference because as we said before, neither end can speed up or slow down to even out the displacement of the unequal ends. Through a little physics, I was able to explain something that every baseball player has thought about at least once. And now I get to explain it to everyone on my team and watch them pretend like they care (even though this is really some cool stuff.)
  11. The past few days in Physics, a lot of people have been talking about space, time, dimension and how all three of those things are very fluid in reality. Since the tiny lecture we had on it last week, I have been thinking about the endless possibilities that could arise if these notions become more widely accepted and studied. One thing that really got me interested was the theory of alternate realities. The simple fact that there are endless universes, every one playing out every single possibility of every decision you ever made. For each one of these realities, if they do exist, there must be some sort of physics guiding the objects of that universe and whether they would be like ours or completely different, who knows. Also, if there are proven to be multiple universes, how may we use physics to interact with, or even influence a parallel universe? The last big question I had was: what would other realities of our world look like if some of the smartest men in our history interpreted the world in a different way, or didn't make the same groundbreaking discoveries. Would we have the technology we have today? Or would it be something more serious, like the total change of the very Physics principals we study currently. To me, these are very thought provoking questions that I hope you may enjoy thinking about, and maybe even answering. Who knows, maybe one day we will live to see these very questions answered by the brightest minds of our time. And how will those discoveries impact our reality?
  12. Its really interesting to think of the concepts of physics and how zero gravity makes all these relationships so pure
  13. Really fun game I never go to play! Looks really cool
  14. ajgartland22


    it seems simple when you watch it but its cool to see how much one needs to know about every aspect of every club
  15. In spite of the title above, this blog post will NOT be about the unfortunate event in which your trusty spoon just cannot take the weight of all that cereal. This is going to be about my unfortunate brother, Chad, who is affectionately known as Spoonhead (or Spoon for short) due to the fact that his small head bears an uncanny resemblance to that of a spoon. Last night, Chad started in his 22nd Varsity baseball game (hes a sophomore) but only lasted about 3 innings because he went down with an ankle injury running to first on a routine ground ball. Around 10:00 last night, we found out he broke both his tibia and fibula (both leg bones) right above his ankle. Although the injury was gruesome, the way it happened is interesting when analyzed from a physics perspective. At the moment the injury occurred, Chad's foot was impacting the bag at a velocity vector which was not perpendicular to the face of the base. (That is a big no-no if you want to avoid injury crossing the base). When the foot impacted the base, the force that the base exerted on the foot made it roll over itself as Chad's momentum from his body weight propelled his legs forward even after he stopped using his muscles to voluntarily move his legs. This rotation of the ankle created a torque that was way too much for his lower leg/ ankle to handle and caused both bones to snap suddenly. Thankfully, it was a quick, clean break and no surgery was required. Get well bro.
  16. Hey still a great blog post don't listen to that man ^ the physics are still pretty cool
  17. HBP- Hit By Pitch is a common abbreviation seen in every stat line in baseball. It is something that looks a lot less painful than it actually is- especially in the majors when some guys just shrug off 90+ mph fastballs. One interesting thing about getting hit by a pitch (which I have some good experience with) is the fact that there really is a wide range of pain associated with the event. There are many factors that effect the pain factor for the batter. Things such as location, pitch type, velocity (obviously) and most importantly, flight of the ball after contact, dictate how bad the experience is for the batter. Since I was young, and before I knew a lot about physics, I inherently knew to cringe every time a guy got nailed and the ball just dropped at his feet instead of whizzing by because of a deflection. Now it makes more sense... using simply the equation for momentum, one can see why HBPs that stop the pitch are more painful. When the ball is stopped in its tracks, the body is imposing a massive impulse force on the ball, totally matching the momentum of the pitch (which trust me, there's a lot of momentum). When the ball merely deflects off a batter and continues with some velocity past the player, the force exerted on the ball is less and therefore the force the ball exerted on the person was less. This observation aside, there have recently been a push towards small, form fitting elbow guards worn by batters. In a batting stance, the guard protects the elbow that is almost hanging over the plate, so in the likely event that the batter is hit there, the energy from the ball will be dissipated through the guard, and not the elbow. Another pro of the small, form fitting guard is the fact that there is much less surface area perpendicular to the flight of the ball, which reduces direct hits, and therefore reduces the amount of force felt by the guard and elbow. And for your viewing pleasure, here is a player charging the mound because of a fastball he caught up near the head And if anyone needs any ideas for blog posts... I think you should go to 3:00 on this next video and analyze Jose Bautista's glasses, helmet and face as a system with Roughned Odor's fist and see if the system conserves energy.
  18. My brother did drop one at a range once... talk about seeing in slow motion- i thought I was going to lose a leg
  19. A common part of baseball is seen almost every pitch when the catcher moves his glove slightly when he catches the ball to try and convince the umpire the pitch was actually a strike, when really it was a ball. This is called framing, and when one really looks at the process, it is easy to see how strong and skilled a catcher must be to execute it. One of the best in the game at this is Yadier Molina. In the video below, take a look at how Molina totally redirects the tremendous force of a ball travelling over 80 mph and sinking down below the zone. The way Molina "sticks" the pitch on the corner of the zone led to this pitch being a strike, even though it is very clear it should have been a ball. He moves his glove up while barely moving backwards, meaning he absorbed and counteracted the downward angled force of the ball in a split second, and made it appear that he actually caught the ball at a spot above where he actually didnt. When one thinks about the serious force behind a major league pitch, Yadier's tremendous strength becomes even more apparent, as he appears to move his glove at will, even though it is being impacted by a projectile travelling at over 80 mph.
  20. Over the break, I took a 5 day cruise into the Gulf of Mexico. Although there wasn't any internet connection for me to have Mr. Fullerton's videos grace my presence (I know what I'm going to be doing all day today), I was still thinking about physics the entire cruise. One particular event that made me use my physics knowledge took place when we were walking down the pier in Progreso, Mexico. Another Carnival cruise ship was leaving the port as we were about to get on our ship. The boat backed away from the dock and once it was out in the middle of the harbor, it began to turn in place. One thing that many don't know about large ships is the fact that they have large thrusters that exert a force perpendicular to the side of the boat, making lateral movements such as docking maneuvers much easier and safer. Another cool use for the thrusters is turning the ship in tight areas. There are 2 pairs of these thrusters, each pair on opposite ends of the boat and each thruster of the pair facing opposite directions. By using the thrusters on opposite sides and ends (two thrusters that are "diagonal" to each other), the captain can turn the ship on an axis to, in this case, point the ship in the direction of the opening of the harbor. On this particular day, there was a very strong wind blowing in from the ocean and while the boat was turning, there was no force vector produced by the thrusters that pushed the ship away from shore, so the wind was allowed to accelerate the ship back towards the pier. After the turn was complete, the ship was traveling with a small velocity backwards. Despite being a small velocity, the fact that a average cruise ship can weigh 60,000 tons automatically means any velocity will translate into an insane amount of momentum. This huge momentum was put on display as the main engines were fired up because even though the black smoke was pouring out of the smokestack, the boat continued to travel backwards for a few long seconds before finally the force of the engines met, and eventually overcame the momentum caused by the wind. This application of a relatively simple concept is shown to have vital importance because without a sound knowledge of the relationships of the forces around him, the captain could have easily put the 3,000+ passenger's lives in extreme danger. It is really cool to think about the giant forces one must harness in order to make a cruise a success.
  21. (49 short days until game #1) Today was a very eventful day in the baseball world. Spring training started and Hannah and Derek Jeter announced the birth of their first child. To celebrate both, I thought I would break down the physics behind two of Derek Jeter's most iconic defensive plays. The first play, commonly called the "jump-throw" is known across the world by almost any baseball player or fan. It starts with a sharply hit ground ball towards the hole between Jeter and third base. Looking at simple kinematics- based relationships, it is a large feat in itself for Jeter to be able to intercept that ball by moving as far and as fast as he did. Next, he calculated the exact flight of the ball as it hopped into his glove, and then with the full momentum of his body taking him away from first base, unleashed a powerful, incredibly accurate throw that beat the runner and ended the inning. Critics say that the only reason that play was made was because Jeter didn't have the speed to get to balls hit away from him, but nobody can deny the fact that the throw, made perfectly, despite the fact he was traveling at a constant speed away from his target and being accelerated back to earth by gravity, is one of the greatest of all time. Another iconic Jeter play, made in a pivotal playoff game against the Oakland A's shows just how good of a physicist Jeter was. The play began as a defensive error by the right fielder. He made an awful throw trying to get the tying run out at the plate. He missed the 1st baseman who was supposed to relay the throw home, and instead sent it sailing into the grass by the 1st base dugout. All of the sudden, Derek Jeter came streaking across the field, and on a full sprint fielded and backhand flipped the ball to the cathcer, Jorge Posada, who nailed Giambi with a quick swipe tag to preserve a 1-0 Yankees lead. The physics come in when Jeter released the ball. Travelling at over 15 mph, Jeter knew exactly what vertical and horizontal angle to launch the ball at in order for it to be delivered to Posada to enable a smooth tag. In the video, one can clearly see how the ball seems to curve as it is being delivered to Posada. This is because the ball is moving in all 3 directions at once. It is moving forward with the force of Jeter's "push", sideways with the constant velocity supplied by the sprinting body, and downwards due to gravity. By correctly judging all three of these factors and many more, Derek Jeter was once again able to make himself into baseball legend with the flash of his glove and the flick of his wrist. Here is a video of some of Jeter's best defensive plays. It starts off with The Flip and his Jump-throw is at 2:44.
  22. 56 days.... Getting hit by the ball in baseball is just a fact of life. Many plays in a game consist of players simply knocking the ball down with their bodies in order to better control it or keep it from getting past them. Usually the ball impacts a part of the body that can take a good amount of force without too much pain (like the torso). Rarely, and usually by error of the fielder, the ball can find its way to less ideal areas of the body. In my case, playing the awkward bouncing grounder on old indoor turf the wrong way resulted in the ball settling on a spot right in the lower part of my forehead. When the batter hit the ball, it took one high hop and I moved backward to catch the ball at the apex of its second hop. When the ball hit the ground after the second hop, its rotational velocity was very high, and the turf provided the perfect surface for the ball to grip the ground and convert that rotational energy into translational energy, therefore increasing the speed of the ball. I was not ready for this sudden speed increase and so when the ball got to me the glove was to low, so it bypassed my glove and continued straight into my face. Currently on my forehead, one can see the stitches imprinted into my skin and also broken skin where the speed at which the stitches were rotating caused them to damage the skin in certain places. Using physics to think through the situation helps me understand why that second hop on artificial turf is always so annoying.
  23. 62 days until the first Varsity Baseball game of the season (@ Arcadia if anyone's interested) My job is a pretty simple one: I work behind the snack bar counter at Lakeshore Hockey Arena and cook food for anyone who cares to buy it. Its not hard and can be fun depending on who you work with but there is one thing that really aggravates me: the french fry bags. The bags have perforated tops to make opening and pouring the fries out of them easy. A major drawback is made very clear though when you open a new case of fries you try to pull the first one out. The boxes they come in should really only hold maybe 5 bags of fries but instead come jammed with 7. All of these bags scrunched together, paired with the fact that the only way to pull them out of the box was by grabbing the (perforated) tops of the bags, what would frequently happen to me was I would tear the top off of the bag, opening the fries in the process of taking out of the stock freezer. This made my boss very upset every time he noticed a bag of opened, freezer burnt fries sitting in the snack bar freezer. To save myself from my boss, I tried to think of how I could possibly grab fries without ruining a whole new bag... Then one day instead of grabbing the first bag in the box, I grabbed the middle one and it came out perfectly. It had dawned on me that maybe the rough cardboard at the end of the box was causing more of a frictional force on the bag than the perforation could handle. I tested this theory one day by grabbing a bag from the middle of the box- one that was surrounded on both sides by smooth plastic bags which had a smaller coefficient of friction and therefore less force than the cardboard- and since that day I have been grabbing from the middle and my boss isn't yelling at me anymore. So use physics- it makes your boss happy.
  24. this connects to when I go camping I was always told to drink liquids near my body temperature bc that way the body expends less energy making the liquids a manageable temp
  25. ajgartland22


    Its cool to think about how the energy is transferred into the glass from the bullet
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