Mousetrap Car Hypothesis

However, we must perform some analysis on this data to confirm that the results for our class really are significantly different from the average. To do this, we performed a chi-square analysis on our data. Our chi-square value is 14.733, and the degrees of freedom are 6. The resulting p-value falls between 0.05 and 0.02. Therefore, we conclude that the data from our class indeed does not fit the average.

The objective of the lab was to program a vehicle to continuously drive in a one meter square. The square was to be completed in less than 20 seconds, and only the wheel encoder could be used to navigate the vehicle. All of this was done by using the Arduino software tool and the Redbot library to create a program that would satisfy the given lab requirements.

Next, the independent variable was the sail car and shed car. The speed acceleration was the dependent variable. The constants marble distance of photogate the angel of the track.

The two types of friction of the mousetrap car are rolling friction and static friction are the two types of friction that may affect the performance of the mousetrap car. The problem of the friction did I encounter and how do you solve them one types of friction i encounter was the static friction I had to take off some glue from the stick that had my wheels and to open eye screws. The factor did take into account to decide the number of wheels you decide to chose for the mousetrap car I saw a video of a car that had 4 wheels and it ran really fast, so I thought a 4 wheeled car would run fast or at least the four meters. What kind of wheels did I use in each axles I use tires as my wheels on each axles. I think the affects on using big wheels

The purpose of this laboratory experiment is to construct a mousetrap vehicle. The vehicle needed to go travel five meters. My partner and I build a mousetrap car that obtain a two-axle vehicle with four CDs making the produce optimum acceleration and travel.

We were given groups to design and make a mousetrap powered car that will roll as far as possible. This will be measured and be put into a graph. We will make three modifications to our mousetrap car over the course of the experiment. We have a variety of different materials, including plastic, wooden wheels and a dowel, screws, mousetrap, blue tack and a piece of string. Forces were acting in a negative way and a positive way on the car. Gravity was pulling the car down to the ground. Uplift was pushing up upon the car against gravity. Drag was also known as friction, holding back the car while it was moving. Thrust was in the cars favour, pushing forward against the force drag. There were also many forms of energy being used and being wasted like heat and sound energy. Potential energy was stored in the mousetrap, propelling itself forward. Kinetic energy was also demonstrated when the car started to roll.

When the mousetrap car moves down the track, the speed of the mousetrap car decreases, therefore my hypothesis was supported. At 1 second, the mousetrap car was traveling at a speed of 3.2 m/s. At 2 seconds, the mousetrap car was traveling at a speed of 2.35 m/s. At 3 seconds, the mousetrap car was traveling at a speed of 1.53 m/s. At 4 seconds, the mousetrap car was moving at a speed of 1.2 m/s. At 5 seconds, the mousetrap car was traveling at a speed of .98m/s. “A car will eventually come to a stop if just allowed to roll as the friction between the road surface and the wheels causes friction that causes the vehicle to stop,”(Examples of Rolling Friction). The evidence supports the claim because the wheels of the mousetrap car are moving

The aim of the experiment is to examine how the acceleration of the car differs when the angle of inclination of the ramp is amplified and to record and analyse findings.

The table reflects the results of the class reinforcing the theory that a treated hand will contain less bacteria than that of an unwashed hand. A few numbers collected proved the opposite where the treated had more bacteria than the unwashed hand. Although most of the data correlated to the hypothesis, some were not because of many unknown factors such as not swiping correctly, or the student swiped too fast not leaving behind enough bacteria to be delivered to the agar plate or during the hand washing there was not specific way of washing them. When I plugged in my data the results did not match with the majority of the class because there were very few bacteria colonies in my untreated and many more on the treated hand; again, there are many reasons why the experiment did not turn out the way the hypothesis was originally planned. However my results did not match the hypothesis, I still agree with the original

The mousetrap car, Versace, was tested multiple times to test how far it went. When constructing the car, the group members had different ideas, but all ideas were put into the construction of the car. The car was tested with CDs as wheels and then paper plates as wheels. Each time, when testing the car, the axle gearing had different measurements and distances. The group had finally gotten the best distance on the car. The group was also able to find the kinetic energy of the boat. Then the data from the tests were used to find the efficiency of the car. Overall, the car did very well.

The car, being above the ground, has gravitational potential energy. Which, when placed on the ramp, transforms into kinetic energy. This kinetic energy pushes the car down the ramp, towards the ground and the momentum carries the car forward. The wheels allow it to gain more distance, as using wheels is the most effective way of transporting something. Having only 3 groups of wheels reduces friction compared to having 4 groups of wheels.

Another force that was acting on the car was friction, friction was acting on the car because the piece of wood was very rough and had little ridges on it which was rubbing on the car which would cause it to slow down a little bit. The direction that the forces were going was pretty much everywhere, gravity was going down and friction was going forwards and backwards. The car did not work well with the friction because the friction would cause the car to somewhat lose control and go off the side of the ramp, the car did not work well with the gravity either because the gravity is what cause the car to fall and crack the egg. Some ways that we could minimize those forces is by making wheels for the car and making the bottom of the car smooth to reduce the amount of friction, we can't really reduce the gravity in the car but one thing that we could do for that is make the car really light but with a lot of padding for the egg. The reason I say we could make it really light is so that when gravity is acting on the car the car won't fall as fast and would somewhat glide down to the floor with a soft landing for the

In this case we need to overcome the friction force from the axles, and tires to be able to power the vehicle by mousetraps far enough. There is a coefficient of friction between the axle and the bearing where the axle sits in the bearings and does not spin together so that is where most of the friction is created. The front wheels currently are hard rubber, and the rear wheels are currently cutting disks which are a hard material and very skinny, creating a very little amount of friction. The total force of friction would need to be less than the force of the mousetraps on the axle throughout the traps angular travel. Methods that were used to reduce friction consists of using lubrication on the axles to make it easier to spin, use skinnier wheels to reduce friction from the ground, and making the vehicle lighter with a simpler design. (See APPENDIX 1 for detailed

The background research had talked about different types and sizes of wheel and the distance in can cover in a certain amount of time.

The toy has uses two main energies, Kinetic and Potential. Potential energy is made by the pulling back of the car. Kinetic is made when after the car is