2. A car crashed into an electric pole at a speed of approximately 40 km/hr. According to an investigation of the accident scene, It was found that there were traces of tires scraping the road due to the sudden slowing of the vehicle, a distance of 40 meters on the dry road surface (F = 0.40) and another 55 meters on the grass-covered shoulder before reaching the electric pole (F = 0.20) If the road section has a 3% downhill slope, calculate the average initial speed of the vehicle. (Before starting to step on the brake)
2. A car crashed into an electric pole at a speed of approximately 40 km/hr. According to an investigation of the accident scene, It was found that there were traces of tires scraping the road due to the sudden slowing of the vehicle, a distance of 40 meters on the dry road surface (F = 0.40) and another 55 meters on the grass-covered shoulder before reaching the electric pole (F = 0.20) If the road section has a 3% downhill slope, calculate the average initial speed of the vehicle. (Before starting to step on the brake)
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Transcribed Image Text:2. A car crashed into an electric pole at a speed of
approximately 40 km/hr. According to an investigation
of the accident scene, It was found that there were
traces of tires scraping the road due to the sudden
slowing of the vehicle, a distance of 40 meters on the
dry road surface (F = 0.40) and another 55 meters on
the grass - covered shoulder before reaching the
electric pole (F = 0.20) If the road section has a 3%
downhill slope, calculate the average initial speed of the
vehicle. (Before starting to step on the brake)
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