Collisions+by+Kim+Bush

=**Collisions: by Kim Bush** = **Brief Description of Driving Safety Hazard**: It is important for drivers to understand that they need to pay attention to what they're doing. This includes that they should pay attention to the roads, the weather, the speed at which they are going, and their surroundings. Instead of talking on the phone, and getting distracted by other things you should be paying attention to the road.

- Wife & Mother Lost From Collision w/ Drunk Driver - "Drunk Driving Collision Kills Local Waitress"
 * Statistics or News Articles Related to this Hazard**:

- Cartoon Car Crash
 * Citations For Picture(s):**

The relavent concepts for this scenario would be time, velocity, and position. However, velocity is the main concept. For example, if the velocity changed then so would the time of the crash and the place of the crash. If you were driving with a higher velocity then it would take less time to hit the other person and you would have covered more ground.
 * How the Kinematics (principles of motion) Relate to This Hazard**

 A) Bob just came from a party and after having too much beer decided to go home. Without paying attention to the street signs and instead, turning up his favorite song on the radio he turned onto 13th Street which is a one way, 548 meter street at a velocity of (15.65 m/s). Sue, who just came from a job interview feeling happy, turned onto the same street driving at a velocity of 11.18 m/s. Only she is going the right direction. Sue suddenly sees blinding lights. At what time will Sue and Bob collide? B) What if the street was 200 meters long? 300 meters? 725 meters? C) What if Bob was going at 20.35 m/s? 32.6 m/s?
 * Example Scenario**

//To figure out a time for when Sue and Bob would collide I made a Chart comparing both people's Time and Position.// //For Bob it would be:// //For Sue it would be:// //Therefore, we can determine that around 20 seconds would be the time at which they crash into each other.// //However:// //To figure out a more accurate time for when Sue and Bob would collide I made a linear equation for both Sue and Bob: A linear equation looks like: y = mx + b m would be the velocities of both persons b would be where both people start So for Sue, her equation would be: y = 11.18x// //For Bob, his equation would be: y =// -15.65x + 548
 * //Steps Taken: Problem A//**
 *  //she has a starting point of 0 so you could say y = 11.18x + 0 but it would mean the same thing//
 * //His velocity would be -15.65 instead of positive because he's going in a negative direction (towards Sue) and his starting point would be 548 because he's starting at the end of the 548 meter block.//

 //Red Line: Sue Purple Line: Bob A (20.42, 228.39): is the point at which they will collide. Y Axis: Position (meters) X Axis: Time (seconds)
 * When these equations are graphed:**
 * Key:**

Therefore Sue and Bob will crash in 20.42 sec. at 228.39 meters.//

//I used the equations that I figured out in problem A: Bob: y = -15.65x + 548 and Sue: y = 11.18x Now, all I have to do is substitute the positions and then graph those equations. Since the street is 200 meters long instead of 548 meters I would make Bob's equation: y = -15.65x + 200 Since Sue is still starting at the beginning of the street then her equation stays the same.//  //Red Line: Sue Purple Line: Bob A (7.43, 83.08): is the point at which they will collide. Y Axis: Position (meters) X Axis: Time (seconds)//
 * //Steps Taken: Problem B//**
 * When these equations are graphed:**
 * Key:**

//Therefore Sue and Bob will crash in 7.43 sec. at 83.08 meters.//

//I used the equations that I figured out in problem A: Bob: y = -15.65x + 548 and Sue: y = 11.18x Now, all I have to do is substitute the velocities and the positions and then graph those equations. Since the street is 300 meters long instead of 548 meters I would make Bob's equation: y = -15.65x + 300 Since Sue is still starting at the beginning of the street then her equation stays the same.// **Key:** //Red Line: Sue Purple Line: Bob B (11.17, 124.90): is the point at which they will collide. Y Axis: Position (meters) X Axis: Time (seconds)//
 * //Second Part of Part B://**
 * When these equations are graphed:**

//Therefore Sue and Bob will crash in 11.17 sec. at 124.90 meters.//

//I used the equations that I figured out in problem A: Bob: y = -15.65x + 548 and Sue: y = 11.18x Now, all I have to do is substitute the velocities and the positions and then graph those equations. Since the street is 725 meters long instead of 548 meters I would make Bob's equation: y = -15.65x + 725 Since Sue is still starting at the beginning of the street then her equation stays the same.// **Key:** //Red Line: Sue Purple Line: Bob B (26.96, 301.44): is the point at which they will collide. Y Axis: Position (meters) X Axis: Time (seconds)//
 * //Third Part of Part B://**
 * When these equations are graphed:**

//Therefore Sue and Bob will crash in 26.96 sec. at 301.44 meters.//

//I used the equations that I figured out in problem A: Bob: y = -15.65x + 548 and Sue: y = 11.18x Now, all I have to do is substitute the velocities and then graph those equations.// //So, instead of Bob going at 15.65 m/s he would be going at 20.35 m/s. Therefore the equation would turn into y = -20.35x + 548// //Sue's equation would still be y = 11.18x Now all we have to do is graph these equations to find out the time at which they would crash.//
 * //Steps Taken: Problem C//**
 * //Remember it would be negative instead of positive because he's going in a negative direct which is towards the beginning of the road.//

**Key:** //Red Line: Sue Purple Line: Bob B (17.14, 191.59): is the point at which they will collide. Y Axis: Position (meters) X Axis: Time (seconds)//
 * When these equations are graphed:**

//Therefore Sue and Bob will crash in 17.14 sec. at 191.59 meters.//

//**Second**// **//Part of Part C://** //I used the equations that I figured out in problem A: Bob: y = -15.65x + 548 and Sue: y = 11.18x Now, all I have to do is substitute the velocities and then graph those equations.// //So, instead of Bob going at 15.65 m/s he would be going at 32.6 m/s. Therefore the equation would turn into y = -32.6x + 548// //Sue's equation would still be y = 11.18x//

** **Key:** //Red Line: Sue Purple Line: Bob B (12.56, 140.38): is the point at which they will collide. Y Axis: Position (meters) X Axis: Time (seconds)//
 * When these equations are graphed:

 //Therefore Sue and Bob will crash in 12.56 sec. at 140.38 meters.//

Collisions can be avoided if you drive at the permitted speed limit. Doing this will give you more time to react to situations and will keep you out of trouble (hopefully). Also you should always pay attention when driving because this will let you have a better sense of whats going on in the environment around you.
 * How this Hazard Can Be Avoided With a Better Knowledge of Kinematics**

With a better knowledge of Kinematics you can figure when something is going to happen and where if given another drivers velocity and position. Also it will let you know how much time you need in order to prevent the situation (ex. braking).
 * Conclusion**