Newton Lab results

1) acceleration vs. force 1

d1=0.8 cm d2=3.0 cm dt=24 cm
t=1/30 s a=1.6m/s2
v1= 0.24 m/s v2=0.9m/s

2) acceleration vs. force 2

d1=2.9 cm d2=9.0 m dt=58 cm
t=1/30 s a= 5.6 m/s2
v1= 0.87 m/s v2=2.70 m/s


3) acceleration vs. force 3

d1=3.5 cm d2=7.3 cm dt=35 cm
t=1/300 s a= 5.28 m/s2
v1= 1.05 m/s v2=2.19m/s

4) acceleration vs. mass 1

d1=0.8 cm d2=3 cm dt=24 cm
t=1/30 s a=1.6m/s2
v1= 0.24 m/s

Best Cannon

The best cannon would be sturdy and powerful enough to launch an object over a great distance. The cannon should be made with a long tube "neck" to get the greatest amount of distance. The tube should also be narrow so that when the propane is set on fire, it will push the object farther. The angle at which the tube is placed is also important. If it is parallel with the ground, the object will not go very far. At, for example 45 degrees, the object will go much farther. "With every reaction, there is an equal, opposite reaction". Therefore if the cannon has a lot of firepower, it should be constructed to withstand the opposite reaction.

Newspaper tower

Using only newspaper and tape, each group tried to construct the highest standing structure. From previous research, everyone knew that their tower needed proper support in order to stand. Our group rolled pieces of newspaper into very narrow tubes and stuck them together with tape to form a tall pole. It was actually the tallest in the class because we left almost nothing for the base and supports. So, with the remaining pieces of newspaper, we constructed  stick-like supports that were taped to the bottom of the tower. Essentially, the stick supports were meant to stop the tower from leaning over and falling, but they were just too thin and flimsy. Our tower did not manage to stay standing because the base did not have enough weight to keep the structure on the ground, and because the stick supports were not thick enough to keep the tower upright.

The Tallest Structure

The tallest structure in the world is the "Burj Khalifa" located in Dubai. It stands 828m tall, and it took aproximately 5 years to complete. The tower gets slimmer as it increases in height which keeps it from falling over. The base is supported by a concrete mat 3.7 meters thick. Concrete in the base has to have a high density to support the structure's weight.

The "podium" area of this structure is used as the center of gravity. Most of the materials making up the structure are located in the center. The weight prevents the tower from tipping and making the height of the structure physically possible.Also, a Y shape makes up the core of the Burj to keep it stable and reduce wind forces. Coloumns are used to strengthen the walls and other mechanisms that help resist weights.

Projectile Motion Questions

Physics questions

Textbook pg 72 # 54, 56, 58, 60, 62, 63

aerodynamic egg glider

I think a good design for an egg glider would be to use the 25 straws to make a skeleton of the glider. Then cover the skeleton with newspaper so that air can be trapped, slowing the glider's fall. The skeleton would have 2 wings like a bird. Then loosely cover the wings with newspaper leaving room for air to accumulate. A central compartment would be designed to hold the egg. This protects the egg from all sides so that when the glider reaches the ground, the egg won't break or anything. It would be located in the middle of the glider so the centre of gravity is balanced across the whole structure. When it is thrown off the school, the wings will catch air and slow the decent. The glider will float to the ground, acting as a parachute for the egg and preventing it from breaking.