Crash Investigations

Well, finished the crash class. Good stuff. Liked the whole thing. Was told today that I will be going to the next level of crash investigations as soon as a class is available. Hooray! Our department had a bad crash recently, so my instructors of the class went to our PD to take a look at the evidence. I got to be there to help out (stand there and provide go to work). But I just like being around the investigation of these crashes, so it was cool. Not the crash....but the part about piecing the pieces of evidence together to reconstruct the entire event prior to crash and during crash. Anybody get the math done on those last problems to come up with my answers?