Lab Report Physics

First off it is important to have a controlled condition in testing the hypothesis so we can determine what changed during the experiment. The only conditions that should be different in this experiment are talking on the cell phone while driving and focusing on the road without distractions (use of a cell phone). A closed course would be best to test the hypothesis because it would need to

On the contrary, at 15 cm high when the car rolled for 60 cm it travelled at an average rate of 38.5 cm/ s. Finally, at 10 cm high, after rolling 90 cm, the toy car was travelling at and average rate of 35 cm/s. On the contrary, the car that started on the ramp 15 cm high, after rolling for 90 cm, was travelling 50.3 cm/s. The data clearly shows a positive trend because when the height of

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.

The purpose of this lab was to test the relationship between velocity, position and time. As well as identify how accelerations affects an object's velocity and time. In this experiment, we will collect data on velocity, speed, and time. We used the equation Y=mx+b, in order to compare the velocity of each trial by comparing the slope and the y-intercept. If the slope was steeper on the graph, this meant that the cart had an increase in velocity. If the cart maintains at a constant speed, then the cart will have an increase in acceleration. In class we learned about the principles of acceleration, time, and velocity. Acceleration is an object’s increase in velocity. Velocity is how

To investigate the dangers of texting while driving, a true experiment is needed to determine if texting is a cause of traffic accidents. A true experiment is thought to be the most accurate type of experimental research, and it is the only type that can establish a cause and effect relationship. Thus, a true experiment can find if texting is a cause that affects traffic accidents. To begin, the experiment will take place on a major road, located in an urban city because a large number of fatal traffic accidents occur in urban settings, when vehicles are traveling less than thirty miles per hour. Random assignment will be used to select participants, and place them into two equal groups, so the sample size is representative of age, ethnicity, and socioeconomic level. Random assignment helps eliminate bias between tech savvy teenagers and older adults, or the use of technology between different ethnicities, or income levels. The experiment will include a control and experimental group, and the manipulated variable is texting while driving. The control group will be instructed to drive through the mapped out course, without a cell phone present in the car. However, the experimental group will drive through the same course, with cell phones that are receiving text messages. The experimenters will have a camera in the car that helps them collect data from the both groups. Each driver will be evaluated on, the number of times they send a text message, the number of

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.

My hypothesis was supported because I had predicted that the toy car would perform the fastest on the asphalt surface, and it did. I thought that if I change the surface to concrete then the speed of the toy car will increase

The Physics of NASCAR by Diandra Leslie-Pelecky: How can a car going 190 mph operate with precision? How can race car drivers walk away from disastrous crashes? The author, a physicist, caught a NASCAR race on television and wondered those same things. In The Physics of NASCAR, Leslie-Pelecky explores the science

The data collected for a vehicle in motion, there was ninety-one percent not on a device, 3 percent recorded as texting, and five percent noted as talking on the phone. They also wrote down the types of vehicles and whether the notes there was a difference between drivers of Sedans, SUVs, and Minivans stopped at the stoplight. Sedans having seventy-nine percent not using a device, fourteen percent texting, and six percent talking on the phone. SUVs note seventy-eight percent, fourteen percent as texting and seven percent as talking on the phone. Drivers in a minivan are recorded as eighty percent not on a device, fourteen percent as texting, and four percent as talking on the phone. They also collected data and compared vehicles with a passenger and without a passenger. Vehicles with no passenger are recorded as seventy-six percent not on a device, sixteen percent as texting, and seven percent as talking on the phone. Vehicles with a passenger have recorded ninety-one percent, six percent texting, and two percent as talking on the

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.

Giving the average a pitiful 2.76 metres. This is mainly because the car wheels weren't stabilised properly, which caused the wheels to lose energy faster. This is because the wheels are wasting energy wobbling side to side, instead of just going straight ahead. This also caused the car to run into the wall repeatedly. Which cut into the distance even more.

The number of left turning vehicles per cycle is examined next. If there are less than two left turning vehicles per cycle during the peak hour, then a permissive left turn phase is adequate. It there are more than two left turning vehicles per cycle, the next parameter, speed limit, is assessed. Data collected showed that on average there were three left turning vehicles per cycle during the peak hour. If the speed limit or 85th percentile of the opposing approaching were greater than 45 mph, a protected left turn phase would be warranted. The observed speed limit at the intersection was 35 mph.

In the past few weeks, we have been studying constant speed. Constant speed is the concept of an object travelling equal distances in the same time periods. By conducting to experiment using only a buggy and a meter stick, we were able to determine why and how the buggy is moving at a constant speed. In Buggy Lab v1.0, we timed how long the buggy would take to get from point A to point B. We placed the buggy at a given distance, and, slowly, increased the distance the buggy travelled. We made our independent variable the distance the buggy travelled and the dependent variable was how long it took to travel the distance it was set for. (In terms of controlled variables, they remained consistent throughout both Buggy Labs: environment and buggy.)

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