Calculating Speed at Time of Collision

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SUMMARY

The discussion centers on calculating the speed at the time of collision between two vehicles: a 2010 Mitsubishi Lancer and a 2015 Kia Soul. Car A is traveling west at 5 mph, while Car B's speed is unknown. The impact causes Car A to stop and rotate 90 degrees, facing north. Due to the lack of skid marks and the complexity of the variables involved, the forum emphasizes the necessity of consulting a certified expert for accurate analysis and legal implications.

PREREQUISITES
  • Understanding of basic physics principles related to motion and collisions.
  • Familiarity with vehicle dynamics and weight distribution.
  • Knowledge of accident reconstruction techniques.
  • Awareness of legal implications in accident analysis.
NEXT STEPS
  • Research vehicle dynamics and how weight affects collision outcomes.
  • Learn about accident reconstruction methodologies and tools.
  • Study the principles of momentum and energy transfer in collisions.
  • Explore the role of certified experts in accident analysis and legal assessments.
USEFUL FOR

This discussion is beneficial for automotive engineers, accident reconstruction specialists, legal professionals, and anyone involved in vehicle safety analysis.

ANigro
First, let me apologize if I don't give you enough info. If I'm missing something, please let me know and I'll try to get the info.

Here is the set up: Car A is traveling West at 5 mph. Car B is traveling South at X mph. Car B strikes A on the rear quarter panel (centered on the rear tire) causing A to stop moving forward and instead rotate 90 degrees, coming to rest facing North. Car A is a 2010 Mitsubishi Lancer with a full tank (12 gallons) of gas and contains 1 occupant, a 400 lb driver. Car B is a 2015 Kia Soul with an unknown gas level and a 150 lb driver. There were no skid marks, so no attempt to slow down was made before the impact.
 
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I'm sorry, but we cannot give consultancy on any real life accidents for several reasons.
  • We do not regulate who will answer, esp. not their expertise.
  • We cannot give statements with a potentially legal impact.
  • We are not certified.
  • We cannot know the entire situation, regardless how detailed your description might be. I.e. we have neither all variables nor enough statistical nor mechanical data, which a responsible judgement would require.
  • Even an informal answer cannot be given, as we do not have control over its usage.
So as in all of these cases, we strongly recommend to consult a local expert, who can inspect what you are talking about, has sufficient experience and data for comparison, plus most important: is certified, so that his expertise will be of legal value.
 
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