After completing your grade 12 Physics course, you have been hired by a prominent forensic engineering company, specializing in vehicle accident reconstruction. Your first task is to analyze a vehicle accident site in order to eventually determine the pre-crash speeds of the two cars involved. Ultimately, the investigation is to conclusively state whether one or both of the cars were traveling above the posted speed limit prior to the collision. Your client (a large insurance company) has prepared for you an aerial photograph that displays the general intersection layout as well as the skid marks produced on the road after the cars collided and 'hooked bumpers'. They also informed you that on the day of the collision, road conditions were dry, smooth, and level. Also, you have been granted access to the intersection if required. Before actually determining the pre-crash speeds, your boss had asked you to prepare a detailed plan you intend to use to determine how fast the cars were traveling just before they collided, You are to derive equation(s) involving the appropriate variables that could be used to directly determine the pre-crash speeds of the cars (note - no numerical values are required).

A 1000-kg car is travelling west at 17.0 m/s toward an intersection. A 1500-kg truck is travelling north at 20.0 m/s toward the same intersection. The car and truck collide at the intersection and stick together. What is their speed after the collision?

You are to derive equation(s) involving the appropriate variables that could be used to directly determine the pre-crash speeds of the cars (note - no numerical values are required).

Two cars collide at an intersection. Car A𝐴, with a mass of 2000 kgkg, is going from west to east, while car B𝐵, of mass 1500 kgkg, is going from north to south at 17 m/sm/s. As a result of this collision, the two cars become enmeshed and move as one afterwards. In your role as an expert witness, you inspect the scene and determine that, after the collision, the enmeshed cars moved at an angle of 55 ∘∘ south of east from the point of impact.Part AHow fast were the enmeshed cars moving just after the collision?Express your answer in meters per second.Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value typev𝑣 =nothingm/sm/sSubmitRequest AnswerPart BHow fast was car A𝐴 going just before the collision?Express your answer in meters per second.Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value typevA𝑣𝐴 =nothing

How would you characterize the collision between the blob and the truck? (Be as specific as possible)

1. Consider the following traffic accident. The defendant was driving her car at approximately the speed limit (35 mph) down a two-lane city street. No cars were parked on the driver’s side of the street at the time the accident occurred. The car proceeded through a lighted intersection and struck a 12-year-old boy at a point approximately 150 feet past the intersection. The car dragged the boy 41 feet before stopping. Once the car stopped the driver backed up and drove over the boy again. Most of the boy’s injuries were to his leg. Damages were set at $100,000. What human factors issues should be considered to determine whether the driver was able to stop the car prior to striking the boy?