The discussion revolves around the calculation of vehicle speed based on the distance a pedestrian is thrown after being struck by a vehicle. Participants explore the feasibility of estimating this speed using various factors, including the weights of the vehicle and pedestrian, and the dynamics of the collision.
Participants generally agree that the information provided is insufficient for calculating vehicle speed, and multiple competing views remain regarding the complexity and feasibility of such calculations.
Limitations include the dependence on various assumptions about collision dynamics, the lack of specific details regarding the collision, and the acknowledgment that pedestrian motion may not conform to idealized models.
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.