Sunday, November 18, 2007

Back to Basics

Okay well i am kinda of sick of collisions and my mind is blank so i decided to do my journal on...
NEWTON'S THIRD LAW...
in...
SWIMMING!

this is my friend, Courtney, swimming 100 breast at some championship a while ago.

in every stroke, as your arms push the water backwards, the water pushes you forward! thus, newton's third law-for every action there is a reaction. in free,back, and fly, the kicking does not exactly follow the same horizontal maneuvers. however, in breaststroke, the "frog" kick follows more of that horizontal action. as you bring your legs from open to close your legs push the water together while the water is pushing on you thus giving you the momentum forward when the kick is finished--your legs are closed.

Monday, November 12, 2007

Silly Me




Okay so this Sunday I went to the senior meet at CORP. and i was drawing while waiting for the pool to open for warm ups. my friend comes a long and plays with my eraser and i spazz out and drop my pencil. when my hand reaches to pick it up as its falling the DULL tip comes in contact with my hand and pushes in when it [the pencil] is compressed between my hand and the ground. i pull it out when its dangling and my friend is freaking out. i was pretty calm although i did get a bit freaked out when i squeezed it and flesh pushed out. but yeah so anyways...i was like hey this is like a sticky collision. haha basically my hand is object one and the pencil is object two and when my hand goes to reach to pencil the pencil ends up staying with my hand--that is until i pull it out. =] so note to self: when a pencil falls let it fall.---although it was kinda by instinct to pick it up thats why so thats why it happened all so fast and BOOM! i get jabbed. haha

Sunday, November 4, 2007

No Picture =[

Have you ever hit someone and your hand hurts but the other person seems to be fine?
I am wondering if this has anything to do with the bouncy collisions we learned about this past week. Like so maybe the other person was either hitting really hard or they are way huger than your hand so the energy transferred is bigger thus giving the "ouch" in that instant after contact?
HERE:
m1v1 +m2v2 = m1v1f + m2v2f
so like say you are 1 and the other person is 2
so you have a small positive velocity going forward in the before collision
and person 2 has a high velocity in the negative direction
then after the collision, the person 2 has a small velocity in the positive direction thus you have a large velocity in the negative direction.
thus when the velocity is transfered maybe it hurts the hand.
i dont know.
does anybody think this makes sense? or at least see where im going?
im crazy.
booo.

go raiders ^.^