- #1
Jerem43
- 3
- 0
Background:
My car was hit by a semi-truck in a very low speed accident, he was raveling perhaps 1-2 mph when he bumped into my car. I sued and the magistrate ruled against me. I am appealing the decision because the truck driver claimed he was traveling on the road way at speed when I cut him off. I know that according to physics that the amount of energy that would have been transferred to my car if he were moving at road speed would have been allot higher than the 1-2 mph he was traveling. To appeal this I will need to show that his testimony is contradicted by the physical evidence.
My story is his 25 ton truck hit my .9 ton car, decelerating from 2 mph to 0 in about three feet. The damage was inline with this as he just smashed my bumper and dented my fender and hood. He testified that he was traveling at road speed, which would be about 30 mph, and could not apply his brakes before hitting me. He also said that the collision stopped his truck in the same distance. Based upon what I have been reading that kind of impact would have generated huge forces in excess of several hundreds of tons of force.
A couple of questions then:
How far would it take for a fully loaded semi-trailer weighing approx 25 tons (26.67 tonnes) to stop from 10, 20, 30 and 40 mph (16, 32, 48 and 64 kph), assuming dry weather conditions on asphalt?
How much force would be behind that truck upon impact if he were decelerating from the same four speeds to zero in three feet?
What other numbers would be needed to help out?
Jeremy Brown
My car was hit by a semi-truck in a very low speed accident, he was raveling perhaps 1-2 mph when he bumped into my car. I sued and the magistrate ruled against me. I am appealing the decision because the truck driver claimed he was traveling on the road way at speed when I cut him off. I know that according to physics that the amount of energy that would have been transferred to my car if he were moving at road speed would have been allot higher than the 1-2 mph he was traveling. To appeal this I will need to show that his testimony is contradicted by the physical evidence.
My story is his 25 ton truck hit my .9 ton car, decelerating from 2 mph to 0 in about three feet. The damage was inline with this as he just smashed my bumper and dented my fender and hood. He testified that he was traveling at road speed, which would be about 30 mph, and could not apply his brakes before hitting me. He also said that the collision stopped his truck in the same distance. Based upon what I have been reading that kind of impact would have generated huge forces in excess of several hundreds of tons of force.
A couple of questions then:
How far would it take for a fully loaded semi-trailer weighing approx 25 tons (26.67 tonnes) to stop from 10, 20, 30 and 40 mph (16, 32, 48 and 64 kph), assuming dry weather conditions on asphalt?
How much force would be behind that truck upon impact if he were decelerating from the same four speeds to zero in three feet?
What other numbers would be needed to help out?
Jeremy Brown