Road Surface Experiment

The hypothesis about the CO2 angle will change the speed of the car was, rejected. The hypothesis was that if a Pinewood derby car had CO2 inserted at a 20 degree angle, then the 20 degree angle would work best because the angle would keep enough thrust power and keep the car on the track. However, the 20 degree angle was the second best because the 180 degree angle had more thrust power to it then the 20 degree angle. The control group was the 180 degree angle and it’s average was 1.33 second. The 45 degree angle was the longest with an average of 2 seconds. The 20 degree angle or second experimental group had an average of 1.67 seconds. I got these results because each angle that got farther from strait started to lose the amount of thrust that the 180 degree angle had. So if I tried it with a 90 degree angle then the car wouldn’t be moving at all.

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.

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.

The experiment was conducted in order to investigate the gravitational potential energy (GPE) and kinetic energy changes, as a car progresses down a rollercoaster track. Throughout a rollercoaster ride, the laws of physics are always involved. These include simple inertial, centripetal and gravitational forces. In the initial ascent of a rollercoaster, gravitational potential energy is gathered and as the rollercoaster descends, this energy is converted into kinetic energy.

In the short story, “Along the Frontage Road” by Michael Chabon, a father and son visit a pumpkin patch off a frontage road to escape from their home and problems. While at the pumpkin patch, the father reflects on how many situations in life are uncontrollable. The family had suffered the loss of their unborn daughter, and the father and son use their experience at the pumpkin patch to move on in life. Michael Chabon uses figurative language in the form of metaphors and similes, a depressing mood, flashbacks, and pumpkin symbolism in “Along the Frontage Road” to comment on hardships in life that people have no control over.

The tools used were: a stopwatch ,to record the speed. A bike and 3 different tires were used to conduct the main part of the experiment. Tools like a wrench was used to help fix the bikes tires and replace the smaller, bigger, or standard tires.

The mousetrap car came in 2nd place. The light-weight and small vehicle served as an advantage in the competition, since rotational inertia was limited. The four wheels were supported by the axles in order to ensure stability and consistency when moving in a forward direction. The chassis was firm, so the mousetrap was positioned appropriately at an angle. However, the long string that connected the drive axle and the lever arm of the mousetrap proved to be a disadvantage in the laboratory investigation.

The paper car crash experiment had only two rules: you must create a car using only two sheets of paper and unlimited amounts of hot glue, and the car must be heavier than 40grams, no longer than 16.5cm and no wider than 6.5cm. What decided the winner is the overall momentum of your car, which depended on how fast your car run as well as how heavy it is. The challenge for me was hitting the weight limit as well trying to fix the rear axle. I realized that I had glued it too close to the front axle. When I placed the egg in the car, the front of the car would rise up and my car wouldn’t roll.

Like mentioned before, to make the hot wheel experiment more efficient would be better material and similarly for the rollercoaster would be a better shape of the roller coaster. This would help the efficiency of the two experiments because if the rollercoaster and car have a better shape where air gets past quickly it would lessen the resistance and friction of the car. Having a shape where there is a low amount of resistance would mean there will be less wasted energy because no friction will cause vibrations on the track.

2. When you double your speed, the kinetic energy of your car is four times as great, making the braking distance four times as great too.

In this lab, the possibility of experiencing sources of was extremely high as pushing a car and calculating the acceleration easily invited interference in otherwise perfect results. It can be proven that there were multiple sources of error by the slope of the equation on the ‘Force vs. Acceleration’ group for this lab. While the slope of the linear trend line was 4084.798, the actual mass of the van and Mr. Simmons combined was 2450 kg. These sources of error include human error such as not keeping the acceleration constant, changing the force placed on the van, and by starting or stopping the timer late. In our lab, some pairs would start and stop in order to remain at the correct number of pounds on the vehicle; therefore, the car had inconsistent acceleration and the data did not accurately reflect the constant rate.

In the video, their hypothesis was that driving while on the cell phone is just as dangerous as driving while drunk. They tested this hypothesis while driving through a course three different times under different circumstances. The dependent variable in the experiment is how well the drivers drove through the courses during the three trials. The independent variables in the experiment is whether the drivers were on the phone, drunk, or neither. The three experimental conditions explored in the experiment were driving while sober without using a phone, driving while using a phone, and driving while drunk. Based on the results of the experiment, the team concluded that driving while on the phone is more dangerous than driving while drunk. A

I chose this topic because it interested me and i did something similar to it last year. This year I am going to answer how does the surface on which a car moves affect how fast it travels.

     Acceleration and Speed are obviously the two defining characteristics of a fast car. Newton’s three laws of motion are an essential part in determining how fast a

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.