Our Newspaper Structure.

When given three sheets of newspaper and a desk-length of tape to work with, the quantity of materials seemed like a small one. We tested many different ways we could roll the sheets of newspaper to obtain the maximum length. We discovered that if we ripped the sheets into quarters, we could achieve a substantial amount of height for our tower which, after all, was the purpose. We decided that we would try and use a "cootie-catcher" base, where it would be inverted with a hole in the center so the  bottom of our thin, diagonally-rolled newspaper could be inserted and held upright. Turned out the newspaper was way too flimsy for the long structure for it to be the center of gravity and such a goal was unattainable. Before the real competition and measuring began, the sides of the cootie-catcher began to rip and the long 'tower' would no longer stay where we needed it to; off the floor. Our tower was not measured for, I guess we were technically disqualified when the cootie-catcher fell apart after our numerous attempts to make it sturdier. Charlie, Cindy and I arrived at the conclusion that the "hands-on" activities are not our forte. I fear for the outcome of our roller coaster.

Petronas Towers.

When asked to think about tall buildings, I thought about the Petronas Towers located in Kuala Lumpur, Malaysia. The Petronas Towers were the tallest buildings in the world from 1998-2004 at 452m until Taipei 101 was completed. Petronas Towers include 88 floors, constructed largely of reinforced concrete, and a steel and glass facade designed to resemble motifs found in Islamic art as a reflection of Malaysia's Muslim religion. They will retain the title of "world's tallest twin towers" and include unique features such as the sky bridge which connect the two towers together.

For the newspaper-tower building activity, a strong base seems to be the necessity. With a strong base, the upper, longer part could have the proper support to hold it up. Somewhat like the woman's center of gravity and the standing of the egg, we would want it lower and close to the ground so that it could stand upright without much assistance. Given that the sheets of newspaper are going to be limited, this would be the best type of structure we could make, while making the most out of the sheets.

Projectile Motion Worksheet Answers.

There was only two cases from what I could tell...

Gliding Egg Landers.

In French class, a couple of weeks ago, we had read about people who go hang gliding for recreational purposes. When Mr. Chung mentioned making an egg glide, my mind immediately backtracked to that class. When I pitched the idea to Cindy and Stephen, we had all agreed that for the time being, it seemed like the best idea.

Given that each group only gets 25 straws, a sheet of newspaper and a limited amount of tape, we'd have to build a structure that wouldn't be too big, but one that would be able to keep our egg from cracking. A hang glider model would be perfect for this assignment because it does not require a complex structure, nor an engine.

We could build a tringular shaped 'wing' which would provide us with the gliding element, and provide a structure we could attatch our egg from.

Taking into consideration that a chicken egg is hefty in weight, in comparison to the straws, that will most likely be a problem we'll have to work through as a group.

Till Wednesday, gliding egg lander.

Homework Check (pg. 72).

Homework questions from textbook page 72 #54, 56, 58, 60, 62 and 63.

Questions #54, 56,58,60,62

  

Question #63

'Walking the Graphs' Lab Results.

Distance-Time Graph - 01b

Velocity-Time Graph - 01b

Acceleration-Time Graph - 01b

Distance-Time Graph - 01c

Velocity-Time Graph - 01c

Acceleration-Time Graph - 01c

Velocity-Time Graph - 01d

Position-Time Graph - 01d

Acceleration-Time Graph - 01d

Velocity-Time Graph -01e

Position-Time Graph - 01e

Acceleration-Time Graph -01e

Position-Time Graph - 01f

Velocity-Time Graph - 01f

Acceleration-Time Graph - 01f

Velocity and Time Lab Activity.

On March 8, 2011, we did our first lab activity in class. The lab involved velocity/time, and distance/time graphs which we had to try and match through a motion detector. The first graphs we tried were distance/time graphs and after a couple of tries, our graphs started look like the graphs given. For a positive slope, we walked away from the motion detector, and for a negative slope, we simply walked towards the detector or simply stayed in the same spot for the horizontal lines. After conquering graphs B and C, we came to graph D which was our first graph for velocity/time. The velocity/time graphs, which is pertaining to speed, were a lot harder to match. They required geisha-like steps at a certain speed, closer or farther away from the motion detector and without a doubt, there were many trial and errors. This being said, the velocity/time graphs were a lot harder to try and correspond with.

Who can walk like a geisha at a constant speed for so long?

Distance/Time Graph - 01F