What is the formula for calculating the speed of a car which leaves a skid mark of 35metres?

On 25th of October, 2007 I had an accident when I was at the stop sign on one of the road waiting for the main road to be cleared and was turning into the main road to the left but unexpectedly, the other car from private parking lot came in to the same main road I was in, and I could not escape my...

If two cars are reversing, one into and slightly along a small cul-de-sac at about 1MPH and the other out of their driveway onto said cul-de-sac at about 4MPH and the one coming from the driveway hits the front end of the other one with his rear bumper, whose at fault?

I am trying to determine who is at fault in the following accident. I was approaching a 4-way stop, and was going to turn left. There was a left turn lane available. A motorcyle behind me was also going to turn left. The motorcylce behind me got into the left turn lane before me. With my turn...