Egg Drop-Competition Day

On competition day our egg survived the drop from 5 meters. The most restricting part to our design would be the weight because it restricted us from getting the most points we could have. The most effective part of our container would be the soft cushion at the bottom that helped us have a soft landing when it hit the ground. That was the most effective because it allowed our container to have a soft landing to stop the egg from breaking when it hit on impact. The least effective part probably would have been the top where the egg was put in because it was less cushioned so if it would of flipped when we dropped it, it probably or could of broke. I think that design we had already could have already supported to eggs in it because it had enough room in it to have two eggs fit in it.

This is a picture of our group member Mac about to drop our container on competition day. 

 

 

Time: 0.41

Mass(container): 229.9g

Mass(egg): 59.8g

Score: 69.03

Egg Drop- Test Day

During test day our egg did not break once during the process. We started off by dropping our container from 1 meter. Then we decided to drop it from 2 meter. After that we continued to drop it from a meter higher each time we dropped the container until we got to 5 meters. We continued to just play around with our container by dropping it from 7 meters just to see if it would survive. It had managed to survive that to. We made no changes during test day we left everything the same.

This is a picture of me dropping our container from 2 meters. Photo by Agnessa.

Video of us dropping our container from a height of 4 meters. Video by Agnessa.

Spaghetti bridge Questions

1. I found that the bridge breaking was the most rewarding because then we could find out what our weakest part of the bridge was and we could try and find out what we could do better.

2. The middle of our bridge was extremely strong. I thought that the spaghetti that was across the bridge helped the bridge a lot in making it stroner.

3. I think that making the bridge longer would have helped a lot in making the ends stronger where it broke. Also we could have done some other things to make things easier.

4. Cross the spaghetti makes it stronger. Also glueing it ttogether in strands together helped make it work better.

Speed and Acceleration

In this search we learned stuff on the web about speed and acceleration.
1) The difference between instantaneous and average speed are: Average speed is the distance traveled in a given period of time. Instantaneous speed is a speed at a certain instant. You are reading your instantaneous speed when looking at your speedometer.
2) Constant speed is when you go the same speed for a period of time. It would travel 300m.
3) Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. Average Acceleration = Vf-Vi/time. Three units for acceleration are: m/s/s, mi/hr/s, and km/hr/s. It would be going 28 m/s/s.
Part II
1) The slope of a position vs. time graph is the velocity. The velocity increases.
2) -3m/s and the second one is 4m/s
3) The slope of a velocity time graph is acceleration. The line for acceleration will be going on a upward, rightward slope. Deceleration would be the opposite.
Part III
1) It means that the objects do not encounter air resistance. It accelerates downwards at a rate of 9.8 m/s/s
2) The velocity is increasing as it falls downward. Its acceleration as its falling is 3.75 m/s/s.

Last Mousetrap Vehicle Post

Things that were successful: 

• I think that the things that were successful were that our vehicle kept on getting better every time that it went. Each time we tested it, it gained a meter.
• Also that we gained a lot of experience in building things by doing this.

Future Recommendations:

• Not have the mousetrap break of of the vehicle right before the race.
• It was not very consistent so we could have adjusted something so it would have went consistently instead of going another meter each time.
• We could have made the wheels tighter so there wouldn't have been such a big wobble in it.
• I think that we should have used a lighter chassis instead of a heavy piece of wood.
• Maybe using different wheel could have helped it go farther and may be even a little faster to.

Race Day Post

Picture of the team before the race. Photo by: Josh 

 Our vehicle got better and better each trial. It went just over 2 meters the first time. Just over 3 meters the second time, and on the last trial it went a little over 4 meters. For this i come to the conclusion of that our vehicle was not very consistent. 

This is a video of the team tearing up the racetrack. Video by: Josh

This is our third and final trial. We went just a tad bit over 4 meters on our final run. This was our most successful one.

If i were to modify our car i would probably try and get rid of the wobble in the wheels and hopefully that would get it to go farther.

I would probably use a lighter chasis on the vehicle and maybe some different tires that would help us go further.

Better wheels would help it perform better.

Paper Tower Challenge

1. I liked building the tower more. I liked building it more because it was way more fun to build the tower than designing it.

2. Our Completed tower was almost identical to our design. The only thing different that we did was added an extra cylinder to each section.

Photo Credit: Agnessa

Photo Credits: Agnessa

3. We could have put a couple pieces of paper together to make our cylinders stronger. If we would have done this i think that our structure could have held more weight in the end than it did.