PROJECTiLE MOTiON: blog 2 :)

http://www.youtube.com/watch?v=apF44BkIkiI

Last weekend, the 'Iolani senior dance team had team bonding at my friend Kristen's house. At team bonding we divided up into teams and competed in different mini competitions such as marshmallow gun shooting and picking up the greatest number of mini m&ms with chopsticks. My favorite competition was the cookie eating competition. Everyone started with a mini cookie on their forehead, and to win they had to eat the cookie without using their hands. Some people tried sliding the cookie down their faces into their mouths, and others tried launching the cookie off one team member's forehead into another team member's mouth. Watching this video made me think of physics and projectile motion. In this case, the cookie was the projectile, and was launched from one member's forehead to another's mouth. The cookie had a vertical acceleration rate of -9.8 m/s and a horizontal acceleration of 0 m/s. The horizontal acceleration is 0 instead of -9.8 because the force of gravity is not acting upon it. Projectile motion is parabolic, which means the object travels in the shape of a parabola, which can be seen in the video while the cookie is in free fall.

FREE FALL: blog 1 :)

During spring break, the 'Iolani Dance Team traveled to Anaheim, California to compete in the Sharp International Competition. Before the competition, we visited Sea World (SHAMU!), watched jousting at Medieval Times, and performed our competition routines at the happiest place on earth- DiSNEYLAND! :) In this dance, to the song "Black Horse and Cherry Tree" by KT Tugstall, my friend and teammate Chelsea was given a tumbling routine to do while the rest of the team lined up for a kickline. Right when this picture was taken, she was in the middle of a backhandspring. Looking back at this picture, I noticed that Chelsea was in "free fall" because the only force acting upon her was the force of gravity since she was not touching the ground. I remembered that all things in free fall (in this case, Chelsea) have a constant acceleration rate of -9.8 meters per second squared.