FTW IS WTF SPELLED BACKWARDS

This past martin luther weekend I went to the beach and i went to the brians and i played wow and halo and i got to like come sort of corporal class or some thing like that, idk. You may wonder what I’m going to talk about in this journal. The answer: skimboarding.

So skimboarding. pretty good. idk, it’s far less awesome than body boarding but its still kinda fun. There’s a litte physics in it. Friction and other stuff happens. First you accelerate to a high velocity, then at the peak velocity, you put your board on the sand and jump on it and slide until you get owned by a wave or a rock or a person in your way. While you’re on the board, 2 forces act on you, friction and gravty. The friction is in the direction opposite of your movement and it decelerates you. The board and the sand has a high coeff of kinetic friction, but when the sand is wet, it gets much lower and you can slide for long distances, depending on the beach terrain. Its important in timing because you don’t want to have a lot of water to slide on because you don’t go far, but you don’t want too little because you slow down too quickly. So, timing when to slide inbetween the ebbs in the tide is important. Speaking of tide, there’s another physics thing: gravitaitonal pull. When there’s a full moon, I heard that waves get bigger by a little bit because the moon pulls more on it or something… huh… wait… what? is that true?

To show that I didn’t forget everything from Physics because of the vacation:
“Put the fulcrum at one of the unknown forces to cancel out a variable.”

haha. and that’s about all I remember. Oh. Rotational Inertia changes depending on what type of object is spinning and there’s like 5 or so different equations for like… a sphere and a pancake and other shapes.

During this break there was a lot of physics related things happening. I’ll try to remember. Oh. I went to lift weights like 3 times a week or so during the vacation. And on several machines, the metal plates add more mass to the bar. So then when the bars are lifted, the person lifting uses more energy. This is because there is a greater change in energy: PE = mgh. The mass increased, so more PE. The change in energy comes from the amount of PE put into the bar with weights. Initial PE is 0 if the reference level is the ground, and final PE is mgh… I think. I’m not even fully sure this is correct anymore.

As for torque, well. Y’know, like bicep curls. Those own. Your elbow is the point of rotation and its like BOOM ow my bicep! cuz you’re like all working out and all good stoof like that.
Also theres pull overs where it works your triceps and your elbow’s the focal point and its like the weight’s over your head. and it hurts your triceps.
Also there’s those hamstring things: you’re lying down on your stomach and your knee is the rotation point and the weight is on your ankles and you’re trying to bend your knees but it’s reel hard and you’re like “ah im cramping!” Those hurt. I have real weak hamstrings and calves for some reason. So junk because it hurts real bad after cross country practices. But, not so much anymore since xc ended and track is far away, like in the beginning of february. Good thing it’s still… oh man. january. AHH NO.

Oh man. I’m looking damn beefy in this picture.

This weekend, I opened many doors. Some had handles and some were just the lame push/pull ones (as seen in many macdonalds and ala moana stores). That’s the only physics thing all weekend. the end.

Nah jk. Torque seems like an easy chapter so I’ll use my remaining mind energies to think of different tor-que things that happened yesterday. It’s like 10 in the morning and Idk why I’m up right now and I’m still tired and there’s a 14 hour choir rehersal today so I’m gonna get raped in the eye for that.

Torque… uhh. Yes, I did flush some toilets. and uhh. oh. i have a copy machine with a flip over cover thing. So it’s kind of like a staple. Oh and I was playing xbox yesterday and the videogame joystick has torque. Ah, this is hurting my bwain.

Anyway, I was thinking of that baseball bat scenario. the pivot point would be your shoulder, wouldn’t it? Ok. For example. I’m left-handed so I so left hand above right-hand. And the pivot point would be my right shoulder and the force application point would be my left hand. But then again. it differs with how hard you swing. Like if you’re warming up you would probably have your elbow or your wrist as the pivot point. Probably… idk. I quit baseball in 2nd grade. But there’s also torque in your hips for when you need to turn to swing the bat. and torque in your feet when you pivot to give moar powah in da swingin.

Frank’s vid is pretty cool. I like the wonder woman cup the best. But srsly, that’s hax. It’s a special toothpick made of glue or something.

AHAHAHA I GOT A CAR AHAHAHA EVEN MORE PHYSICS FUN IS POSSIBLE IRL.

I DECIDED IM GONNA DO THIS ENTIRE JOURNAL IN CAPS LOCK BECAUSE I GOT A CAR. AND THE CAR I GOT HAS A RADIO AND A CD PLAYER AND WINDOWS AND IT LOCKS AND THE SEATS MOVE AND THERES AIR CONDITIONER AND SOME OTHER STUFF. OH LIKE 4 DOORS. YEAH. 4 OF THEM.

ANYWAY, I WAS DRIVING BACK FROM THE SERVCO USED CAR DEALERSHIP NEXT TO THE AIRPORT WHEN I NOTICED SOME BANKED TURNS AND OTHER PHYSICS TYPE SITUATIONS FROM HOMEWORKS AND STUFF. BTW THAT TEST WAS PRETTY HARD. I MEAN, REALLY, SERIOUSLY, DEFINITELY HARD. SO BACK TO MY EPIC CAR PHYSICS STUFF. THE BANKED TURNS ALLOW FOR A GREATER VELOCITY A CAR CAN TAKE THE TURN WITHOUT SLIPPING. DOOD. IT WAS RAINING. IT MADE THE COEFFICIENT OF STATIC FRICION LESS. SO THEN YOU CAN SLIP MORE. SO IT’S DANGEROUS. WATCH OUT FOR SLIPPY CARS.

HYDROPLANING!!!!!! OH SNAP. DRIVER’S ED FOR THE LOSS. BUT I HAVE TO SAY I DID LEARN FROM IT.
HYDRO-FREAKIN-PLAIN-IZZLE.

ALSO, BECAUSE I KNEW ABOUT PHYSICS, I BEAT MY DAD DRIVING HOME FROM THE CAR DEALERSHIP. I COULD CALCULATE THE VELOCITY IN MY HEAD AND BOOM I’D PASS MY DAD. HE’D ONLY BE GOING LIKE 60 MPH.
SPEED LIMIT?! WHAT’S THAT.

SO YEAH. HOPEFULLY NO ONE WILL KEY MY CAR OR DENT MY CAR OR OWN MY CAR OR CRAP ON MY CAR OR ANYTHING LIKE THAT. I DIDNT GET COVERED BY AN INSURANCE COMPANY YET. SO… YEAH. I WOULD SERIOUSLY START CRYING IF SOMETHING BAD LIKE THAT HAPPENED.

TOYOTA COROLLA ‘06 REPRESENT, WE REP REP.

LOL PWNED. THIS IS MAH CAR TYPE, BUT IT BE A BROKEN ONE.

So this past weekend I went to a cross country banquet at Iolani’s cafeteria. I gave an excellent speech about my time in cross country (I’ve been running since 7th grade) and I also gave some advice and tips to running faster. And then I realized… wait. That’s some physics action right there! Because you need to build your momentum before you reach a hill to help you run over it. And then I thought wait… that was exactly like that one question on the problem set! So you need to speed up your velocity which builds your momentum, then you can use that momentum to give you an easier time pushing yourself up a hill. Almost exactly like those energy equations with the KE turning into PE and seeing how high up the slope the car or marble goes.

We also played some football and watched a soccer game before the event so that was some projectile motion physics stuff happening.

Also, earlier, I watched 300. My favorite part is when King Leonidus kicks the Persian messenger into the well. That part is so epicly awesome. And theres even some Physics things happening there. I think its momentum because his foot collides with the Persian’s chest, which sends him flying away. So the momentum from Leonidus is transferred through the collision into the Persian. Nice.

“NO ONE THREATENS A MESSENGER! THIS IS MADNESS!!!! THIS IS BLASPHEMY!!”

actually, its physics :3

I went to Hawaiian Brian’s this weekend. I found out that I got really bad at pool… ORZ. epic ftl right there. But who cares about billiards anyway. Hah. qq. Anyway, I tried to use my physics mastery in using momentum and vectors and stuff that we’ve been doing in class recently, but I still got owned. I think my pool stick wasn’t straight or something. haha. Momentum is transferred through collisions between the cue ball and the other balls to knock them into the pockets located on the sides and corners of the table. I wondered if the cue ball is less massive than the other balls, but unfortunately, I didn’t have that scale in Mr.K’s room. But it did seem lighter at the time. If the cue ball is lighter, then after the impact, the other pool balls will have a smaller change in velocity after the collision.

I was also watching this pro guy play and he was doing some cool stuff by putting english on the cue ball and stuff and making it have lots of back spin and stuff. The coolest thing is when you make the cue ball jump over one ball and hit another one in the pocket. I can do that. :3