Calculate Speed of Car in Car Accident

In summary, the conversation discusses the possibility of determining the speed of a car involved in a recent car accident. The speaker mentions having two figures - the distance from the point of impact and the mass of both cars - but acknowledges that there are too many unknown factors for an exact answer. They suggest that rough estimates may be possible and that the police may have the best estimate due to their use of skidmarks and other information. Another speaker suggests using the equation vf^2=vi^2 +2ad to calculate the initial velocity, but points out that this would also require knowledge of the force of impact. Overall, it is concluded that while it may be possible to estimate the other car's speed, it would not be an exact answer
  • #1
gca114
2
0
Recently I have been involved in a car accident, and would like to figure out what was the speed of the other car that crashed into us.

I only have two figures, the distance from the point of impact to where the car stopped and the mass (of both cars); and also, the final velocity which is 0 m/s.

Does someone think that this is possible to figure the speed of the other car that crashed into us?
 
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  • #2
Too many unknown factors for getting an exact answer.

Some rough estimates can be possible.

Please search forum, this question is asked every few months.
 
  • #3
gca114 said:
Recently I have been involved in a car accident, and would like to figure out what was the speed of the other car that crashed into us.

I only have two figures, the distance from the point of impact to where the car stopped and the mass (of both cars); and also, the final velocity which is 0 m/s.

Does someone think that this is possible to figure the speed of the other car that crashed into us?

I think the police use the skidmarks of the tyres to work out the speed at which the car was travelling. And other stuff. They probably have the best estimate of anyone.
 
  • #4
There were no skidmarks.. as there was not a chance for breaks.. also.. it wasn't a collision crash... both cars separated from each other after the crash..
 
  • #5
Well let's see. You can use the equation vf^2=vi^2 +2ad
you have vf, you say that you have distance, you don't have acceleration but if you knew with how much force the car hit you with you can figure out accelartion from F=MA and then you can find Vi. Therefor if you can figure out the force of impact it can be done. This of course would be an estimate as some other factors are involved.
 

1. How is the speed of a car calculated in a car accident?

The speed of a car in a car accident can be calculated using the formula: speed = distance/time. This means that the speed is equal to the distance traveled divided by the time it took to travel that distance. The distance can be measured using skid marks or other evidence at the scene of the accident, and the time can be determined by witness statements or other methods.

2. Can the speed of a car be accurately determined after a car accident?

Yes, the speed of a car can be accurately determined after a car accident using various methods and evidence. Skid marks, damage to the vehicles, and witness statements can all provide valuable information for calculating the speed of a car in a car accident.

3. How does the speed of a car affect the severity of a car accident?

The speed of a car has a significant impact on the severity of a car accident. The higher the speed of the car, the more force and momentum it has, which can result in more damage and injuries in a collision. This is why it is important to follow speed limits and drive at a safe speed to prevent accidents and minimize their severity.

4. Are there any tools or technology that can help calculate the speed of a car in a car accident?

Yes, there are various tools and technology that can help calculate the speed of a car in a car accident. These include skid mark analysis software, accident reconstruction software, and speed estimation formulas based on vehicle damage. These tools and technology are used by accident investigators and forensic experts to determine the speed of a car in a car accident.

5. How important is it to accurately calculate the speed of a car in a car accident?

Accurately calculating the speed of a car in a car accident is crucial for determining the cause and severity of the accident. It can also help determine who is at fault and aid in insurance claims. Additionally, this information can be used to improve road safety measures and prevent similar accidents in the future.

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