The discussion focuses on calculating vehicle speed from pedestrian throw distance, specifically with a vehicle weight of 1220 kg and a pedestrian weight of 72 kg, resulting in a throw distance of 20.70 meters. Participants concluded that estimating speed based solely on this information is impractical due to various factors, including the angle of throw and energy absorption during the collision. For accurate assessments, knowledge of accident reconstruction analysis is essential, as it incorporates multiple variables beyond basic physics.
PREREQUISITESThis discussion is beneficial for accident reconstruction professionals, forensic engineers, law enforcement personnel involved in traffic investigations, and anyone interested in understanding the complexities of vehicle-pedestrian collision dynamics.
Yes, that's what I want to know. What other information do you need ?Mech_Engineer said:Do you mean estimating how fast a car was going when it hit a pedestrian and threw them down the street? I'm not sure you can estimate that using only the information provided...
To calculate using the laws of physics: the weight of the car, the weight of the pedestrian, the amount the speed of the car changed in the collision, the angle at which the pedestrian was thrown, the details of the damage done to the car in the collision including how much energy went into deforming fenders and the like, and probably some other stuff that I've overlooked.Fatlum said:Yes, that's what I want to know. What other information do you need ?
Data seems to be insufficient.Fatlum said:How can we calculate the speed of a vehicle from pedestrian throw distance ?
If the weight of a vehicle is 1220 kg and a pedestrian's weight is 72 kg. Throw distance is 20.70 meters.