Title:  Measuring Force, Resultant Acceleration Experienced by the Car on Canyon Car Jump 

Introduction（Sarah Li)
• This experiment aimed to study the physical properties of a car as it runs on the launching ramp of the canyon car jump that we’ve constructed using PASCO materials. The primary goal was to determine whether the force and the resultant acceleration exerted on the car changes as it moves along the launching ramp and whether the position of load cell would affect the physical properties
•The hypothesis of the experiment would be:
        - The force and the resultant acceleration exerted on the car changes as it moves along the canyon    car jump. It is predicted that the force and the resultant acceleration would be the highest as the car moves from the top to the bottom and decrease as the car moves upward due to the car’s decreasing speed.
• The variables of the experiment would be:
       -Independent variables:
                      -the position of the load cell
       -Dependent variables: 
                      -force, acceleration, and speed of the car
      -controlled variables:
                    -shape and weight of the car
                     -launching ramp of the canyon car jump (size, shape, length of the track, etc.)
                      -force applied to the car before it runs

Method and Materials(organized by Sarah Li)
•Materials that are used in the experiment include:
      -A load cell, which is placed into various positions of the launching ramp to determine how it would affect the force and resultant acceleration of the car
      - Sparkvue( an app on iPad) is used to streamline the data collection date and create graphs for further analysis
      -70g weight, which is added to the car to aid in measurement of force and resultant acceleration
      -Launching ramp-the car was allowed to travel on the track
       -A 42.80g car
    
• Steps of the experiment

1. The construction of the canyon car jump’s launching ramp was completed.

2. SparkVue was connected to the load cell for measurement purposes.

3. The load cell was placed in fixed position on the launching ramp.

4. The 70g weight xxx was attached to the car using transparent tape in a secure manner.

5. The car was positioned at the starting point of the launching ramp and was given a slight force, allowing it to run along the track.

6. As the car ran along the track, SparkVue automatically measured the force and the resultant acceleration.
7. Based on the data and graphs produced by Sparkvue, we wrote down our lab report

Results(Data Table and Graph) (Sarah Li)
The load cell was situated in three different locations on  the launch ramp, and each location was tested three times to ensure the reliability and validity of the data
Data and graphs are attached below.
Discussion
As the car travels along the launching ramp, the force and resultant acceleration experienced by the car undergo dynamic changes, which are influenced by the position of the load cell. However, the data obtained from the experiment deviates from expected outcomes. It was anticipated that the force and resultant acceleration would reach their highest values as the car moves from the top to the bottom. Nonetheless, the data displayed in the tables and graphs indicates that as the load cell is positioned farther from the starting point, the acceleration experiences more prominent fluctuations.
Notably, when the load cell is fixed to the longest supporting beam (position 1), the acceleration displays fluctuations within the range of 9.7 m/s2 to 10.0 m/s2, while the force remains relatively stable with some degree of volatility. On the other hand, when the load cell is placed on the beam connecting the no.1 beam and the no.4 beam, the acceleration(mainly acceleration-x,y,z, resultant acceleration remains as 9.8m/s2) initially exhibits substantial fluctuations, which subsequently tend to stabilize as the car progresses. Conversely, the force remains constant throughout the journey despite of having some slight fluctuations. At the farthest point from the starting position, both force and acceleration exhibit significant fluctuations, with the most pronounced variations observed at the beginning of the journey.
In terms of structural engineering, the experiment’s results demonstrate that variables such as weight of the car and curve’s shape of the launching ramp’s track can play a crucial role in influencing the force and resultant acceleration experienced by the car. At the beginning, as the car moves down the ramp, its weight and gravity will combine together to affect the acceleratioin, which will also influence the load cell. The car may also experience a sudden increase in force due to a change in its kinetic energy. 
As for the position of the load cell, when the car is on the starting point, it will achieve its maximum value of potentional energy and minimum value of kinetic energy. While the car moves downward, its speed and kinetic energy will both increase until it reach the maximum value and the potential energy will decrease as the height decreases. The change in potential energy will effect the change of acceleration, which causes the value to flactuate. As the car moves to the bottom, because the energy is transferred to the car so that the car will experience an increase in speed, the force applied will also be effected and experience fluctuations. 
This is my lab report. Can you write an abstraction and conclusion for it?