Sunday, September 23, 2007

whatsup physics?!


Alright, so last week wasn't bad.  I didn't have any tests, just a bunch of quizzes, mostly physics.  Alright well this weekend, I ran a cross country meet, but I already used that as an example so I'll talk about tennis.  Today I played a tennis match (doubles), and in this tennis match I thought a lot about physics.  Just in a single point, the velocity of the ball was constantly changing.  My opponent would hit the ball hard, and when I hit the ball, providing more power, the velocity increased even more.  Not only was velocity changing, but the trajectory of the ball was always changing.  Sometimes there would be high lobs, where the ball would travel in a huge arc, and sometimes someone would just smack the ball, and it would seem like the ball had traveled in a straight line.  There were also a lot of different kinds of spins put in play, and i think thats related to physics, but we haven't covered that yet.  Anyways, when I was serving, I thought, how can i serve this ball really fast to the outside corner of the service box?  Well, swing hard, I thought, and aim toward that spot, using topspin.  Unfortunately, I missed, and the ball went into the net.  Too bad I can't be a computer and calculate everything I needed to place the ball perfectly every point.  I'm sure Roger Federer would be ownage at physics.

Sunday, September 16, 2007

POST 2


Hi everyone,
so basically the physics test last week ate me alive.  But not as badly as the pch test did, hahahaha.  Well last week was brutal, there was a ton of homework from all my classes, and I had a test everyday from Tuesday.  The best part of physics this week was when we got to ride the elevator during class.  who knew so many people could fit inside that weinberg elevator!  I've never been in an elevator with that many people before, and it was interesting.  I thought it was cool how now we're starting to learn how physics applies to real life.  Lately we've just been doing examples like dropping a rock, or throwing a ball, and those don't seem quite as interesting when physics is related to other parts of life.  Anyways, lets see...how did physics apply to me this week...  well, on Saturday, us juniors had a bowling function, and i noticed that when I threw the ball with a greater force, it would knock the pins around more, causing more of them to fall, but when I threw the ball with little force, only a few would be knocked down. (either way, I hit gutter balls most of the time, fast or slow).  someday I hope to be able to calculate the exact velocity, spin, and force to hit a strike everytime!  Btw, I bowled a 110, not bad huh ;-)  haha jus kiddin.

Sunday, September 9, 2007

FIRST POST


So basically in the first few weeks of school, physics has proved to be on of the more challenging courses.   I'm already behind on a couple night's of homework, so I have to go catch up on some of that.  Lets see... quizzes and tests are really fun! (and by fun i mean insanely hard).  I don't really know whether I like the online textbook or not.  It has a lot of pros and cons, but its definitely unique.  So lets see, what happened to me this week thats related to physics?  Well, in cross country, our coach was teaching us that if we increased our velocity (okay, he didn't use those exact words) just after turning a corner, and then went back to our normal pace, we could gain a good three to five meters over whoever was trailing us.  We had demonstrations, and it really works well! So next time I'll be sure to accelerate around those corners so I can put a greater displacement between me and the people behind me.