Okay guys, a different one for you. I am in the planning stages of building a structure that will simulate a motor vehicle collision. The process would be a motor vehicle will be hoisted to a specific height and then dropped. The height, and the weight of the vehicle will determine the simulated speed of the vehicle at the time it hits the "crash-pad". What I need to know is the formula for working this out. I have the vehicles weight, the height and obviously gravity (I am not taking into account wind resistance deliberately). If anyone is able to help me out i'd be forever in your debt. If you have an app or spreadsheet that just requires me to enter the weight of the vehicle and height and then reveals the velocity on impact I would be even happier! Thanks in advance for any and all help.