Rockets!?!?!

Who knew that we would be about to launch a rocket in physics class. However, we must first identify the different structures required to build this rocket.

I know that rockets must have a heavy and wide base in order to create an effective rocket. the reason the base must be heavy and wide, is because if the rocket is propelling forward, there must be an opposite force reacting. If the base is not strong, the structure will move backward, and it will not maximize the range of the rocket.

While creating this rocket, i think it is important for the pressure to be concentrated at the rocket itself. Therefore creating a wide base, and a thin tip, so that the it will cause high pressure would be advisable.

Also, the launch angle should be at 45 degrees in order to maximize the range. in every projectile motion there is an x and y component. X is very crucial because that is what gives the distance to the actual object being launched. Not as important, but Y is still very critical in providing the X with enough hang time travel a far distance

other than that... i dont know where to begin until i start building.

Till nextime

Timothy Leung

The Relationship Involving Acceleration, Total Force, and Mass

Today we conducted a lab in our physics class. We explored the question of how the acceleration of a cart depends on the resultant force acting on the cart and the mass of the cart and how this relationship can be expressed in a single equation.

We split this lab up into two different "sections". First by comparing Acceleration and Total force, we had to make mass remain constant. Therefore, the total experiment always contained 3 units of force.

The second by comparing acceleration and mass, force remained constant. For force to remain constant, there was always 1 unit of force acting on the cart.

With Charlie and Nicholas in this group, we were able to conjure up the following results:

F (unit) a (m/s^2)
1 0.259
2 1.07
3 2.92

mass (unit) a (m/s^2)
0 0.624
1 2.01
2 0.259

We are still unable to completely explain the data. But one thing is for sure, there is always the inevitable experimental error in every lab.

Till nextime!

How to build my very own World Trade Center/CN tower out of newspaper...

Given another peculiar task of building the tallest tower out of 3 sheets of news paper and a desk width wide worth of tape, we (our roller coaster groups) had to devise a plan. the easiest way to build the tallest structure, by far, is just to roll the news paper by the length, and then attach them one by one to the ends. However, this made the structure very unbalanced. Therefore, the structure, had to be BALANCED (meaning it would have to stay up) and be tall. Our group first analyzed the cn tower. The cn tower is very similar to a cone shape, wide a the bottom , and it generally get thiner at the top. Also, note that the antenna at the end of the cn tower... is very "cheap" when you measure a building by height. But in this world, anything goes.

We knew that any extra tape we had, would contribute to the heigh by making it stand tall above our structure.

We based our structure on the lesson we had learned in class. Center of gravity must be closer to the ground in order to help balanced the building. Take the world trade center for example. It may look like it is uniform width all the way up to the top, however that is an incorrect notion. in fact, the density, and the weight of the steel was much heavier on the bottom of the building than at the top of the building.

Also in order to prevent as much swaying in the world trade center, they had to add supports.

therefore, i think it is safe to say that, making a wide base at the bottom is very essential. As well, i believe that when we do try to make the height component of the structure, we have to make it strong, or it cannot be to thin and flimsy.

lets hope everything works out!!!

Projectile motion

For homework today, we were supposed to explore different questions that involved the 5 types of motion. I only found 2 types, projectile motion 1 and projectile motion 3.

on the worksheet title Projective motion worksheet, question 3 demonstrated projectile motion 1

Question 6 demonstrated projectile motion 3