1P1

=EVIDENCE =

==Thursday, April 29, 2010: Jen and Josh worked on the calculations regarding the initial velocities of the cars, and approached their collision as a glancing collision in order to find the final velocities of both the cars. Sarah and Allison finished the Crush Lab, and took pictures of their work, and posted it on our wikispace.==

==Friday, April 30, 2010: Jen and Josh had to finish their calculations for the collision and started posting pictures in the Evidence folder of the wikispace. Allison and Sarah used the knowledge they gained from their Crush Lab in order to calculate the total crush energy of each of our vehicles involved in our collision.==

==Sunday, May 2, 2010: Josh, Jen and Allison got together at the Hillsdale Library for about 2 ½ hours in order to type up all the calculations, polish our calculations since we found some mistakes, and create our keynote presentation, which encompassed all of our evidence.==

Monday, May 3, 2010: The group members reviewed the keynote and discussed last minute details.
==Tuesday, May 4, 2010: Each member was responsible for a different part of the trial questions. Allison constructed the opening statement, closing statement, as well as the questions and answers for the Police Witness. Jennifer completed the questions and answers for the Expert Witness P1 as well as the questions for the Expert Witness D1. Josh completed the questions and answers for Expert Witness P2. Also, Sarah completed the questions for Expert Witness D2 and Expert Witness D3.==

**Members:** Josh Kramer, Jennifer Minervini, Allison Jeffery, Sarah Dennis
==**Case One - Prosecution /Defense**==

Project
Car Accident Reconstruction

**Roles (who and what)**
Attorney— Allison Jeffery Police—Sarah Dennis Expert Witness— Josh Kramer Second Expert Witness—Jennifer Minervini

=**Group Constitution**= Forward: This contract is a binding legal document and governs the group until the assigned project deadline. If the group separates, or a member is fired, the basic contract laws remain intact for both parties. However, being fired may cause work responsibilities to shift.

Article I: Absence Policy **c.** **If a group member is absent and notifies the group as agreed above, the other group members must “catch he/she up”.**
 * a.** **If a group member will be absent on a day in which group work is due, the assignment will be emailed to another work member, if it cannot be emailed it will be brought in the next day.**
 * b.** ** If a group member will be absent on a group workday, he/she must ask the group what they missed and have the work due the following day unless it is already completed. **

Article II: Work Policy **c.** ** If a group member commits plagiarism/cheats they will first receive a warning, and then be kicked out of the group. **
 * a. Each group member will complete approximately ¼ of the workload.**
 * b. Any member that is mentally or physically disabled and can prove that they cannot complete the work assigned to them must do the best they can to complete the assignment or seek help from another member.**

Article III: Leadership **b.** **By being elected leader, the person must perform the following duties:**
 * a. How will group leader be selected? The member with the most votes will be leader.**
 * c.** **making sure everyone is on task.**
 * d.** **reminding people when things are due.**
 * e.** **If a leader fulfills his or her duties, they will receive praise from the fellow members.**
 * f.** **If a leader does not fulfill his/her duties he/she can be impeached.**

Article IV: Work Ethics
 * a. If a group member does not complete work they were assigned, the punishment for the infringement will be at first a warning, but next they will be given more work.**
 * b. At the end of the project, how will points for contributions (hard-workers) or lack thereof, be determined? Unless it is obvious that one group member has done a lot or too little, all the points will be divided equally.**

Article V: Member Dismissal
 * a. Can a member be dismissed? If so, under what circumstances? What happens to their work/contribution? They will be dismissed if he/she plagiarizes or repeatedly misses work. Their work/contribution will be kept unless there is suspicion of it being wrong.**
 * b. What if a group member leaves under their own will? What happens to their work/contribution?**
 * The group members will never talk to that member again, and their work will be reviewed by the group for accuracy.**

Article VI: Signature By signing this contract the following group members abide to the articles above. **What if any member fails to abide by the articles of this contract? You will dismissed from the team.**

Project Leader
The group has **__Josh Kramer__** elected as the project leader under Article III.  **Signature** 635285431236546753 254364245364245367846453

23452346780318902

69123454325637456369

andy@andrewsrich.com

= = = =  Josh Kramer- Reaction 1

So far, the most interesting thing about this project has been listening to the real car crash investigators. It was really interesting to learn what they have to deal with everyday. Something new I learned from the presentation was the difference between ABS and standard brakes. ABS brakes do not fully lock and therefore allow you to turn. Standard brakes lock and do not allow you to turn. So far, there is nothing that concerns me about this project. My favorite part is that it is realistic and these situations you see in everyday life.

Josh Kramer- Reaction Time Lab

It was interesting to see after performing six trials that my PRT was 1.87, .37 above the average. Although there is error in this experiment, it seems as though I made need slightly more time to react when I am driving any kind of vehicle. I had only one trial where my reaction time was near the mean.
 * Trial # || distance fallen ||  || time || PRT ||
 * 1 || 0.2 ||  || 0.202030509 || 2.020305089 ||
 * 2 || 0.16 ||  || 0.180701581 || 1.807015806 ||
 * 3 || 0.18 ||  || 0.191662969 || 1.916629695 ||
 * 4 || 0.19 ||  || 0.196914982 || 1.969149822 ||
 * 5 || 0.11 ||  || 0.149829835 || 1.498298355 ||
 * 6 || 0.2 ||  || 0.202030509 || 2.020305089 ||

My mean PRT equals 1.848. This is above the perceived "Normal" but I improved at every trial, leading me to believe that my reaction time is better for things I do on a regular basis or with practice. As I drive a lot more than I catch a falling meter stick, I think (and hope) that my reaction time is better driving than shown in this experiment.
 * Allison Jeffery - Reaction Time Lab**
 * = Trial# ||= Distance Fallen (m) ||=  ||= Time (s) ||= PRT ||
 * = 1 ||= 0.203 ||=  ||= 0.2035 ||= 2.035 ||
 * = 2 ||= 0.186 ||=  ||= 0.1948 ||= 1.948 ||
 * = 3 ||= 0.172 ||=  ||= 0.1873 ||= 1.873 ||
 * = 4 ||= 0.161 ||=  ||= 0.1813 ||= 1.813 ||
 * = 5 ||= 0.122 ||=  ||= 0.1578 ||= 1.578 ||


 * Jennifer Minervini - Reaction Time Lab**

My personal average PRT turned out to be 1.925 This PRT is somewhat close to the average human PRT of 1.5. I realized as I did the experiment that the longer my friend Chrissy would hold the the ruler until it fell, the more time it took me to react since I was not as alert in contrast to when she would drop it quicker. While I am driving, I am always alert, and never get too comfortable because you never know what can happen while cruising around Hillsdale or River Vale.
 * = Trial# ||= Distance Fallen (m) ||=  ||= Time (s) ||= PRT ||
 * = 1 ||= 0.18 ||=  ||= 0.1917 ||= 1.917 ||
 * = 2 ||= 0.16 ||=  ||= 0.1807 ||= 1.807 ||
 * = 3 ||= 0.19 ||=  ||= 0.1969 ||= 1.969 ||
 * = 4 ||= 0.21 ||=  ||= 0.207 ||= 2.07 ||
 * = 5 ||= 0.17 ||=  ||= 0.1863 ||= 1.863 ||


 * Sarah Dennis - Reaction Time Lab**

The average PRT is 1.5, however mine was 1.89. Although these two numbers may appear to be similar, the extra 0.3 or so seconds can make a different in real life on the road. A quick reaction time is imperative in order to help prevent accidents while driving because the other driver may have a longer reaction time, therefore the quicker yours is, the quicker you can hopefully avoid a collision. With that said,I agree with what Jen said about staying alert at all times- even though the normal reaction time is less than two seconds, it is still enough time for a catastrophe to occur.
 * Trial || Distance (m) || Time (s) || PRT ||
 * 1 || .17 || 0.1863 || 1.863 ||
 * 2 || .18 || 0.1917 || 1.917 ||
 * 3 || .17 || 0.1863 || 1.863 ||
 * 4 || .19 || 0.1969 || 1.969 ||
 * 5 || .16 || 0.1807 || 1.807 ||


 * Crush Lab







Friction Lab:

Calculations for Friction Lab: Run #1 = -41 Newtons Run #2 = -40 Newtons Run #3 = -38.8 Newtons

Average Friction Force = -39.9 Newtons**


 * Calculated Drag Factor: 0.73**