My wife was in a car accident her ford expedition was totaled by a motorcycle. Everyone is ok, the motorcycle guy jumped off the bike with out breaking and slid on his leather about 200 feet. (he walked away with out a scratch) The question I have is how fast was the motor cycle going? The motorcycle weighed 566 pounds and the expedition weighed 5,345 pounds. The motorcycle hit the rear passenger wheel. He broke the rear axle, bent the frame and pushed the entire truck 12 feet on asphalt. My wife was moving 5 mph crossing the lane that the motorcycle was in. We know it was fast, but can’t figure it out.