Sunday, September 7, 2008

Journal 1


This is a picture of Landon and Gavin on a swing when me and my freinds went to the park. They begin on the ground (with their knees up to their chest ;)) and then pull back to gain potential energy. Once off the ground, the velocity increases as they swing higher. When the maximum height is reached, they move backwards with increasing acceleration and increasing velocity. Once at the original position, the acceleration begins to decrease as they swing backwards. If this motion was deamonstrated on a velocity graph, it would have a positive slope ( forward direction, positive velocity) and then at its peak it would change to a negative slope (backwards direction with increasing velocity due to gravitational pull). This will then change to a negative slope because they go in a backwards direction but use the force exerted from their legs to increase velocity. Finally they will be moving in a forward direction with increasing velocity which creates a positive slope.

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6 comments:

GTTLGY said...

Hello,
i never learned how to swing on a swing.The acceleration and deceleration was a very good relationship to physics.

gavin said...

yay you got the picture up!!
haha and i go so much higher than landon yeah?? nah nah jk
cool connection to physics

Anonymous said...

haha nice! sounds like fun :) i really like the connection.
oooh...we should do a physics journal to dance one day!

Erin N. said...

haha nice picture! if gavin's on the right it looks like he made doodoo. hahaha. oh and i think my dad knocked his front two teeth off when going way too high on a swing set!

jcarlile09 said...

i know those guys. erin leaves strange comments ya. so random.

Erika said...

hehe..ya it does..or ..nevermind...